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Note 16 - Income Tax (Details) - Provision for (Recovery of) Income Tax (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Deferred
Deferred	$ (991)us-gaap_DeferredIncomeTaxExpenseBenefit	$ (23,868)us-gaap_DeferredIncomeTaxExpenseBenefit	$ (18,660)us-gaap_DeferredIncomeTaxExpenseBenefit
Total	31,799us-gaap_IncomeTaxExpenseBenefit	22,204us-gaap_IncomeTaxExpenseBenefit	20,733us-gaap_IncomeTaxExpenseBenefit
Foreign Tax Authority [Member]
Current
Current	14,677us-gaap_CurrentFederalTaxExpenseBenefit / us-gaap_IncomeTaxAuthorityAxis = us-gaap_ForeignCountryMember	11,860us-gaap_CurrentFederalTaxExpenseBenefit / us-gaap_IncomeTaxAuthorityAxis = us-gaap_ForeignCountryMember	4,729us-gaap_CurrentFederalTaxExpenseBenefit / us-gaap_IncomeTaxAuthorityAxis = us-gaap_ForeignCountryMember
Deferred
Deferred	(1,837)us-gaap_DeferredIncomeTaxExpenseBenefit / us-gaap_IncomeTaxAuthorityAxis = us-gaap_ForeignCountryMember	(3,328)us-gaap_DeferredIncomeTaxExpenseBenefit / us-gaap_IncomeTaxAuthorityAxis = us-gaap_ForeignCountryMember	(1,279)us-gaap_DeferredIncomeTaxExpenseBenefit / us-gaap_IncomeTaxAuthorityAxis = us-gaap_ForeignCountryMember
Current Income Tax [Member]
Current
Current	32,337us-gaap_CurrentFederalTaxExpenseBenefit / us-gaap_IncomeTaxAuthorityAxis = fsrv_CurrentIncomeTaxMember	36,673us-gaap_CurrentFederalTaxExpenseBenefit / us-gaap_IncomeTaxAuthorityAxis = fsrv_CurrentIncomeTaxMember	36,891us-gaap_CurrentFederalTaxExpenseBenefit / us-gaap_IncomeTaxAuthorityAxis = fsrv_CurrentIncomeTaxMember
Deferred Income Tax [Member]
Deferred
Deferred	(538)us-gaap_DeferredIncomeTaxExpenseBenefit / us-gaap_IncomeTaxAuthorityAxis = fsrv_DeferredIncomeTaxMember	(14,469)us-gaap_DeferredIncomeTaxExpenseBenefit / us-gaap_IncomeTaxAuthorityAxis = fsrv_DeferredIncomeTaxMember	(16,158)us-gaap_DeferredIncomeTaxExpenseBenefit / us-gaap_IncomeTaxAuthorityAxis = fsrv_DeferredIncomeTaxMember
Canada Revenue Agency [Member]
Current
Current	144us-gaap_CurrentFederalTaxExpenseBenefit / us-gaap_IncomeTaxAuthorityNameAxis = us-gaap_CanadaRevenueAgencyMember	11,137us-gaap_CurrentFederalTaxExpenseBenefit / us-gaap_IncomeTaxAuthorityNameAxis = us-gaap_CanadaRevenueAgencyMember	5,771us-gaap_CurrentFederalTaxExpenseBenefit / us-gaap_IncomeTaxAuthorityNameAxis = us-gaap_CanadaRevenueAgencyMember
Deferred
Deferred	4,086us-gaap_DeferredIncomeTaxExpenseBenefit / us-gaap_IncomeTaxAuthorityNameAxis = us-gaap_CanadaRevenueAgencyMember	(7,627)us-gaap_DeferredIncomeTaxExpenseBenefit / us-gaap_IncomeTaxAuthorityNameAxis = us-gaap_CanadaRevenueAgencyMember	364us-gaap_DeferredIncomeTaxExpenseBenefit / us-gaap_IncomeTaxAuthorityNameAxis = us-gaap_CanadaRevenueAgencyMember
Internal Revenue Service (IRS) [Member]
Current
Current	4,123us-gaap_CurrentFederalTaxExpenseBenefit / us-gaap_IncomeTaxAuthorityNameAxis = us-gaap_InternalRevenueServiceIRSMember	2,588us-gaap_CurrentFederalTaxExpenseBenefit / us-gaap_IncomeTaxAuthorityNameAxis = us-gaap_InternalRevenueServiceIRSMember	17,865us-gaap_CurrentFederalTaxExpenseBenefit / us-gaap_IncomeTaxAuthorityNameAxis = us-gaap_InternalRevenueServiceIRSMember
Deferred
Deferred	(2,403)us-gaap_DeferredIncomeTaxExpenseBenefit / us-gaap_IncomeTaxAuthorityNameAxis = us-gaap_InternalRevenueServiceIRSMember	(2,435)us-gaap_DeferredIncomeTaxExpenseBenefit / us-gaap_IncomeTaxAuthorityNameAxis = us-gaap_InternalRevenueServiceIRSMember	(14,500)us-gaap_DeferredIncomeTaxExpenseBenefit / us-gaap_IncomeTaxAuthorityNameAxis = us-gaap_InternalRevenueServiceIRSMember
Australian Taxation Office [Member]
Current
Current	13,393us-gaap_CurrentFederalTaxExpenseBenefit / us-gaap_IncomeTaxAuthorityNameAxis = us-gaap_AustralianTaxationOfficeMember	11,088us-gaap_CurrentFederalTaxExpenseBenefit / us-gaap_IncomeTaxAuthorityNameAxis = us-gaap_AustralianTaxationOfficeMember	8,526us-gaap_CurrentFederalTaxExpenseBenefit / us-gaap_IncomeTaxAuthorityNameAxis = us-gaap_AustralianTaxationOfficeMember
Deferred
Deferred	$ (384)us-gaap_DeferredIncomeTaxExpenseBenefit / us-gaap_IncomeTaxAuthorityNameAxis = us-gaap_AustralianTaxationOfficeMember	$ (1,079)us-gaap_DeferredIncomeTaxExpenseBenefit / us-gaap_IncomeTaxAuthorityNameAxis = us-gaap_AustralianTaxationOfficeMember	$ (743)us-gaap_DeferredIncomeTaxExpenseBenefit / us-gaap_IncomeTaxAuthorityNameAxis = us-gaap_AustralianTaxationOfficeMember

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Amount of current federal tax expense (benefit) pertaining to income (loss) from continuing operations.

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