Note 17 - Subsequent Event	12 Months Ended
Dec. 31, 2012
Subsequent Events [Text Block]	17. Subsequent Events Effective January 1, 2013 the Sterling Credit Facility was amended (the "Third Sterling Amendment") to reduce the interest rate to the Prime Rate (as that term is defined in the Loan Agreement) plus one quarter of one percent (1/4%) per annum (instead of the higher Prime Rate plus three quarters of one percent (3/4%) per annum, as previously charged). The following contains descriptions of the Company's purchases of interests in or assets for its operating subsidiaries that occurred after December 31, 2012. The terms "Global Contributions", "Local Investor" and "Local Contributions" are used in those purchase descriptions as such terms are described and defined in Item 1 - Acquisition Strategies and Strategic Acquisitions, above. For each of the following, see generally Item 1 - The Company's Domestic and International Geographic Divisions and Acquisition Strategies and Strategic Acquisitions, above. Preceptor (India) In March of 2013, the Company purchased a majority (51%) of the equity interests in Preceptor Marketing Services Private Limited ("Preceptor"), a recently formed Indian corporation, from Krognos Integrated Marketing Services Private Limited ("Krognos"), and Preceptor became a new consolidated subsidiary of the Company. The Company paid also provided and provides the usual Global Contributions to Preceptor, while Krognos as the Local Investor retained the remaining minority (49%) non-controlling interest in Preceptor and provided and provides the usual Local Contributions. Krognos also is the Local Investor in the Company's existing subsidiary in India, SPAR Krognos Marketing Private Limited. Preceptor will enable the Company to service clients not serviced by its existing Indian subsidiary. The Company paid $20,000 for its interest in Preceptor, and Preceptor became a consolidated subsidiary of the Company on March 1, 2013. See Item 1A - Risks Associated with International andDomestic Joint Venture Subsidiaries, Risks of Having Material Local Investors in International and Domestic Joint Venture Subsidiaries, Risks Associated with Foreign Currency and Risks Associated with International Business, above. Certain MFI Assets (USA) In March of 2013, the Company also purchased general merchandising service and certain in-store audit service businesses from Market Force Information, Inc. ("MFI"), a leading customer intelligence solution provider. The acquired in-store audit services include the price, point of sale, out of stock, intercept and planogram audits managed by MFI's New York office. With this acquisition, the Company has entered the growing in-store audit service business and expanded its existing general merchandising service and client base domestically. The purchase was made pursuant to the Asset Purchase Agreement dated as of March 15, 2013 (the "Purchase Agreement") between MFI, as the seller, and SPAR Marketing Force, Inc. ("SMF"), a consolidated subsidiary of SGRP and its principal domestic operating company. The purchase was completed at the end of the day on March 15, 2015. The Purchase Price under the Purchase Agreement consisted of a cash purchase price of $1,300,000 and the assumption of certain specified liabilities (principally those arising after the closing under the assumed contracts). The Company plans to complete its purchase price valuation analysis during 2013 and record an appropriate intangible asset based on its analysis. In addition, SMF entered into a Consulting Services Agreement and a Transition Services Agreement with MFI, under which MFI will provide certain services, equipment and facilities for up to one year, and various assignments and other transfer documents.

Note 17 - Subsequent Event

12 Months Ended

Dec. 31, 2012

17. Subsequent Events

Effective January 1, 2013 the Sterling Credit Facility was amended (the "Third Sterling Amendment") to reduce the interest rate to the Prime Rate (as that term is defined in the Loan Agreement) plus one quarter of one percent (1/4%) per annum (instead of the higher Prime Rate plus three quarters of one percent (3/4%) per annum, as previously charged).

The following contains descriptions of the Company's purchases of interests in or assets for its operating subsidiaries that occurred after December 31, 2012. The terms "Global Contributions", "Local Investor" and "Local Contributions" are used in those purchase descriptions as such terms are described and defined in Item 1 - Acquisition Strategies and Strategic Acquisitions, above.

For each of the following, see generally Item 1 - The Company's Domestic and International Geographic Divisions and Acquisition Strategies and Strategic Acquisitions, above.

Preceptor (India)

In March of 2013, the Company purchased a majority (51%) of the equity interests in Preceptor Marketing Services Private Limited ("Preceptor"), a recently formed Indian corporation, from Krognos Integrated Marketing Services Private Limited ("Krognos"), and Preceptor became a new consolidated subsidiary of the Company. The Company paid also provided and provides the usual Global Contributions to Preceptor, while Krognos as the Local Investor retained the remaining minority (49%) non-controlling interest in Preceptor and provided and provides the usual Local Contributions. Krognos also is the Local Investor in the Company's existing subsidiary in India, SPAR Krognos Marketing Private Limited. Preceptor will enable the Company to service clients not serviced by its existing Indian subsidiary. The Company paid $20,000 for its interest in Preceptor, and Preceptor became a consolidated subsidiary of the Company on March 1, 2013. See Item 1A - Risks Associated with International andDomestic Joint Venture Subsidiaries, Risks of Having Material Local Investors in International and Domestic Joint Venture Subsidiaries, Risks Associated with Foreign Currency and Risks Associated with International Business, above.

Certain MFI Assets (USA)

In March of 2013, the Company also purchased general merchandising service and certain in-store audit service businesses from Market Force Information, Inc. ("MFI"), a leading customer intelligence solution provider. The acquired in-store audit services include the price, point of sale, out of stock, intercept and planogram audits managed by MFI's New York office. With this acquisition, the Company has entered the growing in-store audit service business and expanded its existing general merchandising service and client base domestically.

The purchase was made pursuant to the Asset Purchase Agreement dated as of March 15, 2013 (the "Purchase Agreement") between MFI, as the seller, and SPAR Marketing Force, Inc. ("SMF"), a consolidated subsidiary of SGRP and its principal domestic operating company. The purchase was completed at the end of the day on March 15, 2015. The Purchase Price under the Purchase Agreement consisted of a cash purchase price of $1,300,000 and the assumption of certain specified liabilities (principally those arising after the closing under the assumed contracts). The Company plans to complete its purchase price valuation analysis during 2013 and record an appropriate intangible asset based on its analysis. In addition, SMF entered into a Consulting Services Agreement and a Transition Services Agreement with MFI, under which MFI will provide certain services, equipment and facilities for up to one year, and various assignments and other transfer documents.