NET INCOME (LOSS) PER COMMON SHARE (Tables)

12 Months Ended

Dec. 31, 2017

NET INCOME (LOSS) PER COMMON SHARE

Schedule of computation of basic and diluted earnings per share

	Years Ended December 31,
	2017		2016		2015
Basic:
Net (loss) income attributable to ISG	$	(2,130)	$	(6,505)	$	4,841
Weighted average common shares		43,025		36,625		37,186
(Loss) earnings per share attributable to ISG	$	(0.05)	$	(0.18)	$	0.13
Diluted:
Net (loss) income attributable to ISG	$	(2,130)	$	(6,505)	$	4,841
Interest expense of convertible debt, net of tax		—		—		80
Net (loss) income attributable to ISG, as adjusted	$	(2,130)	$	(6,505)	$	4,921
Basic weighted average common shares		43,025		36,625		37,186
Potential common shares		—		—		1,750
Diluted weighted average common shares		43,025		36,625		38,936
Diluted (loss) earnings per share attributable to ISG	$	(0.05)	$	(0.18)	$	0.13