Note 15 - Net Income Per Share (Details) - Basic and Diluted Earnings Per Share (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Numerator:
Net income attributable to SPAR Group, Inc. (in Dollars)	$ 3,350	$ 2,930
Denominator:
Shares used in basic net income per share calculation	20,490	20,240
Effect of diluted securities:
Stock options	1,244	1,366
Shares used in diluted net income per share calculations	21,734	21,606
Basic net income per common share: (in Dollars per share)	$ 0.16	$ 0.14
Diluted net income per common share: (in Dollars per share)	$ 0.15	$ 0.14