Note 3 - Basic and Diluted Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Net (loss) attributable to SPAR Group, Inc.	$ (139)	$ (74)
Weighted average shares used in basic and diluted net income per share calculation (in shares)	20,563	20,562
Basic and diluted net (loss) per common share (in dollars per share)	$ (0.01)