XBRL (eXtensible Business Reporting Language) is an XML-based language for the electronic communication of business and financial data. Each item on the financial statements is tagged with information about various attributes, such as calendar year, audited/unaudited status, currency, etc. XBRL is not an accounting standard; it is simply a standard for providing an identifying tag for business and financial data. XBRL -tagged data can be read by any software that includes an XBRL processor and thus can be easily transferred between computers.
The XBRL files included on this page are displayed in their native XML format and have been included to provide you the option of importing them into your XBRL viewer of choice.
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Q1 2015 XBRL Financial Statements
vtnrpk-20150331.xml - XBRL Instance Document
vtnrpk-20150331.xsd - XBRL Taxonomy Extension Schema
vtnrpk-20150331_cal - XBRL Taxonomy Extension Calculation Linkbase
vtnrpk-20150331_lab - XBRL Taxonomy Extension Label Linkbase
vtnrpk-20150331_def - XBRL Taxonomy Extension Definition Linkbase
vtnrpk-20150331_pre - XBRL Taxonomy Extension Presentation Linkbase
vtnrpk-20150331.xml - XBRL Instance Document
vtnrpk-20150331.xsd - XBRL Taxonomy Extension Schema
vtnrpk-20150331_cal - XBRL Taxonomy Extension Calculation Linkbase
vtnrpk-20150331_lab - XBRL Taxonomy Extension Label Linkbase
vtnrpk-20150331_def - XBRL Taxonomy Extension Definition Linkbase
vtnrpk-20150331_pre - XBRL Taxonomy Extension Presentation Linkbase
Q4 2014 XBRL Financial Statements
vtnrpk-20141231.xml - XBRL Instance Document
vtnrpk-20141231.xsd - XBRL Taxonomy Extension Schema
vtnrpk-20141231_cal - XBRL Taxonomy Extension Calculation Linkbase
vtnrpk-20141231_lab - XBRL Taxonomy Extension Label Linkbase
vtnrpk-20141231_def - XBRL Taxonomy Extension Definition Linkbase
vtnrpk-20141231_pre - XBRL Taxonomy Extension Presentation Linkbase
vtnrpk-20141231.xml - XBRL Instance Document
vtnrpk-20141231.xsd - XBRL Taxonomy Extension Schema
vtnrpk-20141231_cal - XBRL Taxonomy Extension Calculation Linkbase
vtnrpk-20141231_lab - XBRL Taxonomy Extension Label Linkbase
vtnrpk-20141231_def - XBRL Taxonomy Extension Definition Linkbase
vtnrpk-20141231_pre - XBRL Taxonomy Extension Presentation Linkbase
Q3 2014 XBRL Financial Statements
vtnrpk-20140930.xml - XBRL Instance Document
vtnrpk-20140930.xsd - XBRL Taxonomy Extension Schema
vtnrpk-20140930_cal - XBRL Taxonomy Extension Calculation Linkbase
vtnrpk-20140930_lab - XBRL Taxonomy Extension Label Linkbase
vtnrpk-20140930_def - XBRL Taxonomy Extension Definition Linkbase
vtnrpk-20140930_pre - XBRL Taxonomy Extension Presentation Linkbase
vtnrpk-20140930.xml - XBRL Instance Document
vtnrpk-20140930.xsd - XBRL Taxonomy Extension Schema
vtnrpk-20140930_cal - XBRL Taxonomy Extension Calculation Linkbase
vtnrpk-20140930_lab - XBRL Taxonomy Extension Label Linkbase
vtnrpk-20140930_def - XBRL Taxonomy Extension Definition Linkbase
vtnrpk-20140930_pre - XBRL Taxonomy Extension Presentation Linkbase
Q2 2014 XBRL Financial Statements
vtnrpk-20140630.xml - XBRL Instance Document
vtnrpk-20140630.xsd - XBRL Taxonomy Extension Schema
vtnrpk-20140630_cal - XBRL Taxonomy Extension Calculation Linkbase
vtnrpk-20140630_lab - XBRL Taxonomy Extension Label Linkbase
vtnrpk-20140630_def - XBRL Taxonomy Extension Definition Linkbase
vtnrpk-20140630_pre - XBRL Taxonomy Extension Presentation Linkbase
vtnrpk-20140630.xsd - XBRL Taxonomy Extension Schema
vtnrpk-20140630_cal - XBRL Taxonomy Extension Calculation Linkbase
vtnrpk-20140630_lab - XBRL Taxonomy Extension Label Linkbase
vtnrpk-20140630_def - XBRL Taxonomy Extension Definition Linkbase
vtnrpk-20140630_pre - XBRL Taxonomy Extension Presentation Linkbase
Q1 2014 XBRL Financial Statements
vtnrpk-20140331.xml - XBRL Instance Document
vtnrpk-20140331.xsd - XBRL Taxonomy Extension Schema
vtnrpk-20140331_cal - XBRL Taxonomy Extension Calculation Linkbase
vtnrpk-20140331_lab - XBRL Taxonomy Extension Label Linkbase
vtnrpk-20140331_def - XBRL Taxonomy Extension Definition Linkbase
vtnrpk-20140331_pre - XBRL Taxonomy Extension Presentation Linkbase
Q4 2013 XBRL Financial Statements
vtnrpk-20131231.xml - XBRL Instance Document
vtnrpk-20131231.xsd - XBRL Taxonomy Extension Schema
vtnrpk-20131231_cal - XBRL Taxonomy Extension Calculation Linkbase
vtnrpk-20131231_lab - XBRL Taxonomy Extension Label Linkbase
vtnrpk-20131231_def - XBRL Taxonomy Extension Definition Linkbase
vtnrpk-20131231_pre - XBRL Taxonomy Extension Presentation Linkbase
vtnrpk-20131231.xsd - XBRL Taxonomy Extension Schema
vtnrpk-20131231_cal - XBRL Taxonomy Extension Calculation Linkbase
vtnrpk-20131231_lab - XBRL Taxonomy Extension Label Linkbase
vtnrpk-20131231_def - XBRL Taxonomy Extension Definition Linkbase
vtnrpk-20131231_pre - XBRL Taxonomy Extension Presentation Linkbase
Q3 2013 XBRL Financial Statements
vtnrpk-20130930.xml – XBRL Instance Document
vtnrpk-20130930.xsd – XBRL Taxonomy Extension Schema
vtnrpk-20130990_cal – XBRL Taxonomy Extension Calculation Linkbase
vtnrpk-20130930_lab – XBRL Taxonomy Extension Label Linkbase
vtnrpk-20130930_def – XBRL Taxonomy Extension Definition Linkbase
vtnrpk-20130930_pre – XBRL Taxonomy Extension Presentation Linkbase
vtnrpk-20130930.xml – XBRL Instance Document
vtnrpk-20130930.xsd – XBRL Taxonomy Extension Schema
vtnrpk-20130990_cal – XBRL Taxonomy Extension Calculation Linkbase
vtnrpk-20130930_lab – XBRL Taxonomy Extension Label Linkbase
vtnrpk-20130930_def – XBRL Taxonomy Extension Definition Linkbase
vtnrpk-20130930_pre – XBRL Taxonomy Extension Presentation Linkbase
Q2 2013 XBRL Financial Statements
vtnrpk-20130630.xml – XBRL Instance Document
vtnrpk-20130630.xsd – XBRL Taxonomy Extension Schema
vtnrpk-20130630_cal – XBRL Taxonomy Extension Calculation Linkbase
vtnrpk-20130630_lab – XBRL Taxonomy Extension Label Linkbase
vtnrpk-20130630_def – XBRL Taxonomy Extension Definition Linkbase
vtnrpk-20130630_pre – XBRL Taxonomy Extension Presentation Linkbase
vtnrpk-20130630.xml – XBRL Instance Document
vtnrpk-20130630.xsd – XBRL Taxonomy Extension Schema
vtnrpk-20130630_cal – XBRL Taxonomy Extension Calculation Linkbase
vtnrpk-20130630_lab – XBRL Taxonomy Extension Label Linkbase
vtnrpk-20130630_def – XBRL Taxonomy Extension Definition Linkbase
vtnrpk-20130630_pre – XBRL Taxonomy Extension Presentation Linkbase
Q1 2013 XBRL Financial Statements
vtnrpk-20130331.xml – XBRL Instance Document
vtnrpk-20130331.xsd – XBRL Taxonomy Extension Schema
vtnrpk-20130331_cal – XBRL Taxonomy Extension Calculation Linkbase
vtnrpk-20130331_lab – XBRL Taxonomy Extension Label Linkbase
vtnrpk-20130331_def – XBRL Taxonomy Extension Definition Linkbase
vtnrpk-20130331_pre – XBRL Taxonomy Extension Presentation Linkbase
vtnrpk-20130331.xml – XBRL Instance Document
vtnrpk-20130331.xsd – XBRL Taxonomy Extension Schema
vtnrpk-20130331_cal – XBRL Taxonomy Extension Calculation Linkbase
vtnrpk-20130331_lab – XBRL Taxonomy Extension Label Linkbase
vtnrpk-20130331_def – XBRL Taxonomy Extension Definition Linkbase
vtnrpk-20130331_pre – XBRL Taxonomy Extension Presentation Linkbase
Q4 2012 XBRL Financial Statements
vtnrpk-20121231.xml – XBRL Instance Document
vtnrpk-20121231.xsd – XBRL Taxonomy Extension Schema
vtnrpk-20121231_cal – XBRL Taxonomy Extension Calculation Linkbase
vtnrpk-20121231_lab – XBRL Taxonomy Extension Label Linkbase
vtnrpk-20121231_def – XBRL Taxonomy Extension Definition Linkbase
vtnrpk-20121231_pre – XBRL Taxonomy Extension Presentation Linkbase
vtnrpk-20121231.xml – XBRL Instance Document
vtnrpk-20121231.xsd – XBRL Taxonomy Extension Schema
vtnrpk-20121231_cal – XBRL Taxonomy Extension Calculation Linkbase
vtnrpk-20121231_lab – XBRL Taxonomy Extension Label Linkbase
vtnrpk-20121231_def – XBRL Taxonomy Extension Definition Linkbase
vtnrpk-20121231_pre – XBRL Taxonomy Extension Presentation Linkbase
Q3 2012 XBRL Financial Statements
vtnrpk-20120930.xml – XBRL Instance Document
vtnrpk-20120930.xsd – XBRL Taxonomy Extension Schema
vtnrpk-20120930_cal – XBRL Taxonomy Extension Calculation Linkbase
vtnrpk-20120930_lab – XBRL Taxonomy Extension Label Linkbase
vtnrpk-20120930_def – XBRL Taxonomy Extension Definition Linkbase
vtnrpk-20120930_pre – XBRL Taxonomy Extension Presentation Linkbase
vtnrpk-20120930.xml – XBRL Instance Document
vtnrpk-20120930.xsd – XBRL Taxonomy Extension Schema
vtnrpk-20120930_cal – XBRL Taxonomy Extension Calculation Linkbase
vtnrpk-20120930_lab – XBRL Taxonomy Extension Label Linkbase
vtnrpk-20120930_def – XBRL Taxonomy Extension Definition Linkbase
vtnrpk-20120930_pre – XBRL Taxonomy Extension Presentation Linkbase
Q2 2012 XBRL Financial Statements
vtnrpk-20120630.xml – XBRL Instance Document
vtnrpk-20120630.xsd – XBRL Taxonomy Extension Schema
vtnrpk-20120630_cal – XBRL Taxonomy Extension Calculation Linkbase
vtnrpk-20120630_lab – XBRL Taxonomy Extension Label Linkbase
vtnrpk-20120630_def – XBRL Taxonomy Extension Definition Linkbase
vtnrpk-20120630_pre – XBRL Taxonomy Extension Presentation Linkbase
vtnrpk-20120630.xml – XBRL Instance Document
vtnrpk-20120630.xsd – XBRL Taxonomy Extension Schema
vtnrpk-20120630_cal – XBRL Taxonomy Extension Calculation Linkbase
vtnrpk-20120630_lab – XBRL Taxonomy Extension Label Linkbase
vtnrpk-20120630_def – XBRL Taxonomy Extension Definition Linkbase
vtnrpk-20120630_pre – XBRL Taxonomy Extension Presentation Linkbase
Q1 2012 XBRL Financial Statements
vtnrpk-20120331.xml – XBRL Instance Document
vtnrpk-20120331.xsd – XBRL Taxonomy Extension Schema
vtnrpk-20120331_cal – XBRL Taxonomy Extension Calculation Linkbase
vtnrpk-20120331_lab – XBRL Taxonomy Extension Label Linkbase
vtnrpk-20120331_def – XBRL Taxonomy Extension Definition Linkbase
vtnrpk-20120331_pre – XBRL Taxonomy Extension Presentation Linkbase
vtnrpk-20120331.xml – XBRL Instance Document
vtnrpk-20120331.xsd – XBRL Taxonomy Extension Schema
vtnrpk-20120331_cal – XBRL Taxonomy Extension Calculation Linkbase
vtnrpk-20120331_lab – XBRL Taxonomy Extension Label Linkbase
vtnrpk-20120331_def – XBRL Taxonomy Extension Definition Linkbase
vtnrpk-20120331_pre – XBRL Taxonomy Extension Presentation Linkbase
Q4 2011 XBRL Financial Statements
vtnrpk-20111231.xml – XBRL Instance Document
vtnrpk-20111231.xsd – XBRL Taxonomy Extension Schema
vtnrpk-20111231_cal – XBRL Taxonomy Extension Calculation Linkbase
vtnrpk-20111231_lab – XBRL Taxonomy Extension Label Linkbase
vtnrpk-20111231_def – XBRL Taxonomy Extension Definition Linkbase
vtnrpk-20111231_pre – XBRL Taxonomy Extension Presentation Linkbase
vtnrpk-20111231.xml – XBRL Instance Document
vtnrpk-20111231.xsd – XBRL Taxonomy Extension Schema
vtnrpk-20111231_cal – XBRL Taxonomy Extension Calculation Linkbase
vtnrpk-20111231_lab – XBRL Taxonomy Extension Label Linkbase
vtnrpk-20111231_def – XBRL Taxonomy Extension Definition Linkbase
vtnrpk-20111231_pre – XBRL Taxonomy Extension Presentation Linkbase
Q3 2011 XBRL Financial Statements
vtnrpk-20110930.xml – XBRL Instance Document
vtnrpk-20110930.xsd – XBRL Taxonomy Extension Schema
vtnrpk-20110930_cal – XBRL Taxonomy Extension Calculation Linkbase
vtnrpk-20110930_lab – XBRL Taxonomy Extension Label Linkbase
vtnrpk-20110930_def – XBRL Taxonomy Extension Definition Linkbase
vtnrpk-20110930_pre – XBRL Taxonomy Extension Presentation Linkbase
vtnrpk-20110930.xml – XBRL Instance Document
vtnrpk-20110930.xsd – XBRL Taxonomy Extension Schema
vtnrpk-20110930_cal – XBRL Taxonomy Extension Calculation Linkbase
vtnrpk-20110930_lab – XBRL Taxonomy Extension Label Linkbase
vtnrpk-20110930_def – XBRL Taxonomy Extension Definition Linkbase
vtnrpk-20110930_pre – XBRL Taxonomy Extension Presentation Linkbase
Q2 2011 XBRL Financial Statements
vtnrpk-20110630.xml – XBRL Instance Document
vtnrpk-20110630.xsd – XBRL Taxonomy Extension Schema
vtnrpk-20110630_cal – XBRL Taxonomy Extension Calculation Linkbase
vtnrpk-20110630_lab – XBRL Taxonomy Extension Label Linkbase
vtnrpk-20110630_def – XBRL Taxonomy Extension Definition Linkbase
vtnrpk-20110630_pre – XBRL Taxonomy Extension Presentation Linkbase
vtnrpk-20110630.xml – XBRL Instance Document
vtnrpk-20110630.xsd – XBRL Taxonomy Extension Schema
vtnrpk-20110630_cal – XBRL Taxonomy Extension Calculation Linkbase
vtnrpk-20110630_lab – XBRL Taxonomy Extension Label Linkbase
vtnrpk-20110630_def – XBRL Taxonomy Extension Definition Linkbase
vtnrpk-20110630_pre – XBRL Taxonomy Extension Presentation Linkbase