Note 3 - Acquisitions (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Note 3 - Acquisitions (Details) [Line Items]
Number of Businesses Acquired	17us-gaap_NumberOfBusinessesAcquired	11us-gaap_NumberOfBusinessesAcquired	5us-gaap_NumberOfBusinessesAcquired
Business Combination Gain on Revaluation of Previously Held Equity Investment		$ 820
Business Combination, Acquisition Related Costs	9,454	3,336	5,032
Business Acquisition, Goodwill, Expected Tax Deductible Amount	7,620	2,823	2,214
Business Combination, Contingent Consideration, Liability	27,136
CRE Segment [Member]
Note 3 - Acquisitions (Details) [Line Items]
Number of Businesses Acquired	9	8	2
RRE Segment [Member]
Note 3 - Acquisitions (Details) [Line Items]
Number of Businesses Acquired	5	3	2
Property Services Segment [Member]
Note 3 - Acquisitions (Details) [Line Items]
Number of Businesses Acquired	3
California Closets [Member]
Note 3 - Acquisitions (Details) [Line Items]
Number of Businesses Acquired	2
Property Services [Member]
Note 3 - Acquisitions (Details) [Line Items]
Number of Businesses Acquired			1
Acquisitions After December 31, 2008 [Member]
Note 3 - Acquisitions (Details) [Line Items]
Business Combination, Contingent Consideration, Liability	27,136
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, Low		33,279
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High		36,163
Contingent Consideration Paid	$ 25,814	$ 1,994	$ 5,492

The business combination gain on revaluation of previously held equity investment.

No definition available.

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Data Type:	xbrli:monetaryItemType
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Period Type:	duration

- Definition

The contingent consideration paid.

+ References

No definition available.

+ Details

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Namespace Prefix:	fsrv_
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Balance Type:	debit
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- Details

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- Definition

The amount of goodwill arising from a business combination that is expected to be deductible for tax purposes.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 805

-SubTopic 30

-Section 50

-Paragraph 1

-Subparagraph (d)

-URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e6927-128479

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 805

-SubTopic 10

-Section 25

-Paragraph 23

-URI http://asc.fasb.org/extlink&oid=34752592&loc=d3e1043-128460

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

For contingent consideration arrangements recognized in connection with a business combination, this element represents an estimate of the high-end of the potential range (undiscounted) of the consideration which may be paid.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 805

-SubTopic 30

-Section 50

-Paragraph 1

-Subparagraph (c)(3)

-URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e6927-128479

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

For contingent consideration arrangements and indemnification assets recognized in connection with a business combination, this element represents an estimate of the low-end of the potential range (undiscounted) of the consideration which may be paid.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 805

-SubTopic 30

-Section 50

-Paragraph 1

-Subparagraph (c)(3)

-URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e6927-128479

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- Definition

Amount of liability recognized arising from contingent consideration in a business combination.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 805

-SubTopic 30

-Section 25

-Paragraph 6

-URI http://asc.fasb.org/extlink&oid=6911189&loc=d3e6408-128476

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 805

-SubTopic 30

-Section 35

-Paragraph 1

-Subparagraph b

-URI http://asc.fasb.org/extlink&oid=6911338&loc=d3e6819-128478

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The number of businesses acquired by the entity during the period.

+ References

No definition available.

+ Details

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Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Details

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- Details

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- Details

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- Details

Name:	us-gaap_BusinessAcquisitionAxis=fsrv_PropertyServicesMember
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Data Type:	na
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- Details

Name:	us-gaap_BusinessAcquisitionAxis=fsrv_PropertyServicesSegmentMember
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Data Type:	na
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- Details

Name:	us-gaap_BusinessAcquisitionAxis=fsrv_RRESegmentMember
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