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Note 14 - Capital Stock (Details) | 0 Months Ended | 1 Months Ended |  | 4 Months Ended | 12 Months Ended | 1 Months Ended |
--- | --- | --- | --- | --- | --- | --- | ---
May 03, 2013 USD ($) | Sep. 24, 2013 | Feb. 28, 2004 Subordinate Voting Shares Conversion Rate [Member] Second Payment [Member] CAD | May 03, 2013 Subordinate Voting Shares [Member] | Dec. 31, 2014 Subordinate Voting Shares [Member] | Dec. 31, 2014 Multiple Voting Shares [Member] | Feb. 28, 2004 First Payment [Member] Chief Executive Officer [Member] CAD | Feb. 28, 2004 Second Payment [Member] Chief Executive Officer [Member] | Dec. 31, 2014 Chief Executive Officer [Member] USD ($)
Note 14 - Capital Stock (Details) [Line Items] |  |  |  |  |  |  |  |  |
Number of Votes for Subordinate Voting Shares |  |  |  |  | 1 fsrv_NumberOfVotesForSubordinateVotingShares / us-gaap_StatementClassOfStockAxis = fsrv_SubordinateVotingSharesMember |  |  |  |
Number of Votes for Multiple Voting Shares |  |  |  |  |  | 20 fsrv_NumberOfVotesForMultipleVotingShares / us-gaap_StatementClassOfStockAxis = fsrv_MultipleVotingSharesMember |  |  |
Percentage of Redemption for Cash Consideration | 30.00%fsrv_PercentageOfRedemptionForCashConsideration |  |  |  |  |  |  |  |
Preferred Stock Redeemed for Cash (in Dollars) | $ 39,232,000 fsrv_PreferredStockRedeemedForCash |  |  |  |  |  |  |  |
Percentage of Weighted Average Trading Price | 95.00%fsrv_PercentageOfWeightedAverageTradingPrice |  |  |  |  |  |  |  |
Weighted Average Share Price (in Dollars per share) | $ 33.34 fsrv_WeightedAverageSharePrice |  |  |  |  |  |  |  |
Stock Issued During Period, Shares, Treasury Stock Reissued (in Shares) |  |  |  | 2,889,900 us-gaap_StockIssuedDuringPeriodSharesTreasuryStockReissued / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = fsrv_SubordinateVotingSharesMember |  |  |  |  |
Conversion of Stock, Shares Issued (in Shares) |  | 2,744,886 us-gaap_ConversionOfStockSharesIssued1 |  |  |  |  |  |  |
Percentage Payment of Subordinate and Multiple Voting Shares |  |  |  |  |  |  | 5.00%fsrv_PercentagePaymentOfSubordinateAndMultipleVotingShares / us-gaap_StatementScenarioAxis = fsrv_FirstPaymentMember / us-gaap_TitleOfIndividualAxis = us-gaap_ChiefExecutiveOfficerMember |  |
Payment Formula Base Price (in Dollars) |  |  | 11.05 fsrv_PaymentFormulaBasePrice / us-gaap_PreferredUnitsByNameAxis = fsrv_SubordinateVotingSharesConversionRateMember / us-gaap_StatementScenarioAxis = fsrv_SecondPaymentMember |  |  |  | 5.675 fsrv_PaymentFormulaBasePrice / us-gaap_StatementScenarioAxis = fsrv_FirstPaymentMember / us-gaap_TitleOfIndividualAxis = us-gaap_ChiefExecutiveOfficerMember |  |
Percentage Payment of Shares Outstanding |  |  |  |  |  |  |  | 5.00%fsrv_PercentagePaymentOfSharesOutstanding / us-gaap_StatementScenarioAxis = fsrv_SecondPaymentMember / us-gaap_TitleOfIndividualAxis = us-gaap_ChiefExecutiveOfficerMember |
Contingent Liabiilty Upon Sale of Control (in Dollars) |  |  |  |  |  |  |  |  | $ 163,585 fsrv_ContingentLiabiiltyUponSaleOfControl / us-gaap_TitleOfIndividualAxis = us-gaap_ChiefExecutiveOfficerMember

X
- Definition Contingent liability upon arm's length sale of control of the Company. + References No definition available. + Details
Name: | fsrv_ContingentLiabiiltyUponSaleOfControl
Namespace Prefix: | fsrv_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | fsrv_Note14CapitalStockDetailsLineItems
Namespace Prefix: | fsrv_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the number of votes for multiple voting shares. + References No definition available. + Details
Name: | fsrv_NumberOfVotesForMultipleVotingShares
Namespace Prefix: | fsrv_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the number of votes for the subordinate voting shares. + References No definition available. + Details
Name: | fsrv_NumberOfVotesForSubordinateVotingShares
Namespace Prefix: | fsrv_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the payment formula base price. + References No definition available. + Details
Name: | fsrv_PaymentFormulaBasePrice
Namespace Prefix: | fsrv_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | instant

X
- Definition Represents the percentage of redemption for cash consideration. + References No definition available. + Details
Name: | fsrv_PercentageOfRedemptionForCashConsideration
Namespace Prefix: | fsrv_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the percentage of weighted average trading price. + References No definition available. + Details
Name: | fsrv_PercentageOfWeightedAverageTradingPrice
Namespace Prefix: | fsrv_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the percentage payment of shares outstanding. + References No definition available. + Details
Name: | fsrv_PercentagePaymentOfSharesOutstanding
Namespace Prefix: | fsrv_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the percentage payment of subordinate and multiple voting shares. + References No definition available. + Details
Name: | fsrv_PercentagePaymentOfSubordinateAndMultipleVotingShares
Namespace Prefix: | fsrv_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the preferred stock redeemed for cash. + References No definition available. + Details
Name: | fsrv_PreferredStockRedeemedForCash
Namespace Prefix: | fsrv_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Represents the weighted average share price. + References No definition available. + Details
Name: | fsrv_WeightedAverageSharePrice
Namespace Prefix: | fsrv_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Definition The number of new shares issued in the conversion of stock in a noncash (or part noncash) transaction. Noncash is defined as transactions during a period that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4332-108586 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4313-108586 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4304-108586 + Details
Name: | us-gaap_ConversionOfStockSharesIssued1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of treasury shares (units) reissued during the period, excluding reissuance of shares (units) held in treasury used to satisfy equity-based compensation obligations exercised by the holders of such rights. Upon reissuance of shares (units) from treasury, either the common or preferred stock (unit) reissued is outstanding. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644 + Details
Name: | us-gaap_StockIssuedDuringPeriodSharesTreasuryStockReissued
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration