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Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6943989&loc=d3e3602-108585 false2Depreciation and amortization10false 2us-gaap_OperatingIncomeLossus-gaap_truecreditdurationfalsefalsefalsefalsefalsefalsefalsefalsetotalLabel1truefalsefalse2653400026534falsefalsefalse2truefalsefalse2328700023287falsefalsefalse3truefalsefalse7784900077849falsefalsefalse4truefalsefalse6611300066113falsefalsefalsexbrli:monetaryItemTypemonetaryThe net result for the period of deducting operating expenses from operating revenues.No definition available.true2Operating income11true 2us-gaap_NonoperatingIncomeExpenseAbstractus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Other income (expense):12false 3us-gaap_InterestExpenseus-gaap_truedebitdurationfalsefalsefalsefalsefalsefalsefalsetruenegatedLabel1truefalsefalse-173000-173falsefalsefalse2truefalsefalse-249000-249falsefalsefalse3truefalsefalse-599000-599falsefalsefalse4truefalsefalse-684000-684falsefalsefalsexbrli:monetaryItemTypemonetaryThe cost of borrowed funds accounted for as interest that was charged against earnings during the period.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 34 -Paragraph 21 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. 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