Condensed Consolidated Statements of Income (Loss) and Comprehensive Income (Loss) (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Net revenues	$ 54,579	$ 39,886
Cost of revenues	44,849	31,838
Gross profit	9,730	8,048
Selling, general and administrative expense	8,458	7,058
Depreciation and amortization	542	505
Operating income	730	485
Interest expense (income)	199	(46)
Other (income), net	(72)	(62)
Income before income tax expense	603	593
Income tax expense	178	419
Net income	425	174
Net income attributable to non-controlling interest	(301)	(418)
Net income (loss) attributable to SPAR Group, Inc.	$ 124	$ (244)
Basic and diluted income (loss) per common share: (in dollars per share)	$ 0.01	$ (0.01)
Weighted average common shares – basic (in shares)	20,648	20,649
Weighted average common shares – diluted (in shares)	21,599	20,649
Net income	$ 425	$ 174
Other comprehensive (loss) income:
Foreign currency translation adjustments	(30)	164
Comprehensive income	395	338
Comprehensive income attributable to non-controlling interest	(271)	(516)
Comprehensive income (loss) attributable to SPAR Group, Inc.	$ 124	$ (178)