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Income Taxes (Details 4) (USD $) | 12 Months Ended
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Dec. 31, 2014 | Dec. 31, 2013
Liability for uncertain tax positions |  |
Balance at the beginning of the period | $ 458,000 us-gaap_LiabilityForUncertainTaxPositionsNoncurrent | $ 430,000 us-gaap_LiabilityForUncertainTaxPositionsNoncurrent
Resolution of prior year items |  | (3,000)us-gaap_UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities
Increases due to current year positions | 5,000 us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions | 10,000 us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions
Increases due to interest | 23,000 us-gaap_UnrecognizedTaxBenefitsInterestOnIncomeTaxesExpense | 21,000 us-gaap_UnrecognizedTaxBenefitsInterestOnIncomeTaxesExpense
Balance at the end of the period | $ 486,000 us-gaap_LiabilityForUncertainTaxPositionsNoncurrent | $ 458,000 us-gaap_LiabilityForUncertainTaxPositionsNoncurrent

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- Details
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- Definition The noncurrent portion of the amount recognized for uncertain tax positions as of the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.24) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Amount of decrease in unrecognized tax benefits resulting from settlements with taxing authorities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=6907707&loc=SL6600010-109319 + Details
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- Definition Amount of increase in unrecognized tax benefits resulting from tax positions that have been or will be taken in current period tax return. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=6907707&loc=SL6600010-109319 + Details
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- Definition Amount of interest expense for an underpayment of income taxes. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32718-109319 + Details
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