EARNINGS PER SHARE (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Numerator:
Net loss from continuing operations	$ 68,469	$ (1,245)	$ 67,262	$ (4,238)
Total income from discontinued operations, net of tax	69,612	1,699	74,134	6,471
Net income (loss)	$ 68,469	$ (1,245)	$ 67,262	$ (4,238)
Denominator:
Weighted average shares used to compute basic income (loss)	33,275	31,078	33,014	30,932
Effect of dilutive securities - stock options (in shares)	1,659	0	938	0
Denominator for dilutive income (loss) per share	34,934	31,078	33,952	30,932
Earnings per share, basic
Loss per share from continuing operations, basic	$ (0.03)	$ (0.09)	$ (0.21)	$ (0.35)
Income per share from discontinued operations, basic	2.09	0.05	2.25	0.21
Income (loss) per share, basic	2.06	(0.04)	2.04	(0.14)
Earnings per share, diluted
Loss per share from continuing operations, diluted	(0.03)	(0.09)	(0.21)	(0.35)
Income per share from discontinued operations, diluted	1.99	0.05	2.19	0.21
Income (loss) per share, diluted	$ 1.96	$ (0.04)	$ 1.98	$ (0.14)
Anti-dilutive securities excluded from diluted loss per share
Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent	$ (1,143)	$ (2,944)	$ (6,872)	$ (10,709)
Warrants
Anti-dilutive securities excluded from diluted loss per share
Anti-dilutive securities excluded from diluted loss per share	0	7	0	13
Options
Anti-dilutive securities excluded from diluted loss per share
Anti-dilutive securities excluded from diluted loss per share	0	373	0	771