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Note 16 - Income Tax (Details) (USD $) | 12 Months Ended
--- | ---
Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Note 16 - Income Tax (Details) [Line Items] |  |  |
Tax Credit Carryforward, Duration Limit | 20 years |  |
Undistributed Earnings Of Foreign And Domestic Subsidiaries | $ 271,890,000 fsrv_UndistributedEarningsOfForeignAndDomesticSubsidiaries | $ 186,121,000 fsrv_UndistributedEarningsOfForeignAndDomesticSubsidiaries |
Unrecognized Tax Benefits | 4,333,000 us-gaap_UnrecognizedTaxBenefits | 8,020,000 us-gaap_UnrecognizedTaxBenefits |
Unrecognized Tax Benefits that Would Impact Effective Tax Rate | 4,333 us-gaap_UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate | 8,226 us-gaap_UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate |
Recovery Of Income Tax Interest And Penalties | 26,000 fsrv_RecoveryOfIncomeTaxInterestAndPenalties | 29,000 fsrv_RecoveryOfIncomeTaxInterestAndPenalties | 38,000 fsrv_RecoveryOfIncomeTaxInterestAndPenalties
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued | 125,000 us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued | 151,000 us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued |
Unrecognized Tax Benefits, Period Increase (Decrease) | $ 313 us-gaap_UnrecognizedTaxBenefitsPeriodIncreaseDecrease |  |
CANADA | Minimum [Member] |  |  |
Note 16 - Income Tax (Details) [Line Items] |  |  |
Income Tax Return Examination Period | 3 years |  |
CANADA | Maximum [Member] |  |  |
Note 16 - Income Tax (Details) [Line Items] |  |  |
Income Tax Return Examination Period | 4 years |  |
Domestic Tax Authority [Member] | Minimum [Member] |  |  |
Note 16 - Income Tax (Details) [Line Items] |  |  |
Income Tax Return Examination Period | 3 years |  |
Domestic Tax Authority [Member] | Maximum [Member] |  |  |
Note 16 - Income Tax (Details) [Line Items] |  |  |
Income Tax Return Examination Period | 5 years |  |
Minimum [Member] | Canada and United States [Member] |  |  |
Note 16 - Income Tax (Details) [Line Items] |  |  |
Tax Credit Carryforward, Duration Limit | 14 years |  |
Maximum [Member] | Canada and United States [Member] |  |  |
Note 16 - Income Tax (Details) [Line Items] |  |  |
Tax Credit Carryforward, Duration Limit | 20 years |  |
Australian Taxation Office [Member] |  |  |
Note 16 - Income Tax (Details) [Line Items] |  |  |
Income Tax Return Examination Period | 4 years |  |

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- Definition Represents the recovery of income tax interest and penalties. + References No definition available. + Details
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- Definition Unremitted earnings form domestic and foreign subs that could have a tax implication. + References No definition available. + Details
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- Definition Amount of unrecognized tax benefits pertaining to uncertain tax positions taken in tax returns. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Unrecognized Tax Benefit -URI http://asc.fasb.org/extlink&oid=6527854 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6907707&loc=SL6600010-109319 + Details
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- Definition Amount accrued for interest on an underpayment of income taxes and penalties related to a tax position claimed or expected to be claimed in the 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 15 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32718-109319 + Details
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- Definition The net amount of all increases and decreases in unrecognized tax benefits for the period. + 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) -URI http://asc.fasb.org/extlink&oid=6907707&loc=SL6600010-109319 + Details
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- Definition The total amount of unrecognized tax benefits that, if recognized, would affect the effective tax rate. + 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 (b) -URI http://asc.fasb.org/extlink&oid=6907707&loc=SL6600010-109319 + Details
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