2.2.0.25falsefalse006020 - Disclosure - Holly Corporation Proposed Mergertruefalsefalse1falsefalseUSDfalsefalse1/1/2011 - 3/31/2011 USD ($) USD ($) / shares $c00007http://www.sec.gov/CIK0000110430duration2011-01-01T00:00:002011-03-31T00:00:00u000Standardhttp://www.xbrl.org/2003/iso4217USDiso42170u002Dividehttp://www.xbrl.org/2003/iso4217USDiso4217http://www.xbrl.org/2003/instancesharesxbrli0USDUSD$2true0fto_NotesToFinancialStatementsAbstractftofalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseNotes to Financial Statements [Abstract]3false0us-gaap_BusinessCombinationDisclosureTextBlockus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1falsefalsefalse00<div style="TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt; FONT-WEIGHT: bold">2.      Holly Corporation Proposed Merger</font></div><div style="TEXT-INDENT: 0pt; DISPLAY: block"><br /></div><div style="TEXT-INDENT: 18pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt">On February 21, 2011, the Company entered into a definitive merger agreement with Holly Corporation ("Holly") under which the companies will combine in an all-stock merger of equals transaction.  Under the terms of the agreement, the Company's shareholders will receive 0.4811 Holly shares for each share of the Company's common stock.  Upon closing of the transaction, Holly shareholders are expected to own approximately 51 percent and the Company's shareholders are expected to own approximately 49 percent of the combined company.  The transaction is structured to be tax-free to the shareholders of both companies.  The merger is expected to close in the third quarter of 2011.  On March 18, 2011, Holly and the Company were notified of the early termination of the pre-merger waiting period under the Hart-Scott-Rodino Antitrust Improvement Act of 1976, thus satisfying one of the conditions to the completion of the pending merger.  On March 21, 2011, Holly filed a Form S-4 Registration Statement, relating to the proposed merger with the Securities and Exchange Commission ("SEC").  On April 27, 2011, Holly filed an amended Registration Statement Form S-4/A to address comments received from the SEC.  The merger remains subject to, among other things, approval by both companies' shareholders and other customary closing conditions.</font></div>2.      Holly Corporation Proposed MergerOn February 21, 2011, the Company entered into a definitive merger agreement with HollyfalsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringDescription of a business combination (or series of individually immaterial business combinations) completed during the period, including background, timing, and recognized assets and liabilities. This element may be used as a single block of text to encapsulate the entire disclosure (including data and tables) regarding business combinations, including leverage buyout transactions (as applicable).Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 141 -Paragraph 51, 52 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Emerging Issues Task Force (EITF) -Number 88-16 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 141R -Paragraph 67-73 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 141R -Paragraph F4 -Subparagraph e -Appendix F falsefalseHolly Corporation Proposed Merger12Holly Corporation Proposed MergerUnKnownUnKnownUnKnownUnKnownfalsetrue