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Consolidated Statements of Shareholders’ Equity (Parentheticals) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
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Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Tax effect, stock options exercised | $ 5,207 us-gaap_DeferredTaxExpenseFromStockOptionsExercised | $ 2,566 us-gaap_DeferredTaxExpenseFromStockOptionsExercised | $ 1,668 us-gaap_DeferredTaxExpenseFromStockOptionsExercised
Additional Paid-in Capital [Member] |  |  |
Tax effect, stock options exercised | $ 5,207 us-gaap_DeferredTaxExpenseFromStockOptionsExercised / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember | $ 2,566 us-gaap_DeferredTaxExpenseFromStockOptionsExercised / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember | $ 1,668 us-gaap_DeferredTaxExpenseFromStockOptionsExercised / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember

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- Definition Amount of deferred tax expense from write-off of the deferred tax asset related to deductible stock options at exercise. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 20 -Section 55 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=32706628&loc=d3e11283-113907 + Details
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- Details
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