ORGANIZATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Operations Data (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Selected Statement of Operations Data
Provision For (Benefit From) Income Taxes	$ (1,311)	$ 12,840
Consolidated Net Loss	(2,979)	(22,522)
Net income (loss) attributable to common stockholders	$ (3,104)	$ (22,555)
Basic and Diluted Net Loss Attributable to Common Stockholders	$ (0.07)	$ (0.48)
As Previously Reported
Selected Statement of Operations Data
Provision For (Benefit From) Income Taxes	$ 2,248
Consolidated Net Loss	(6,538)
Net income (loss) attributable to common stockholders	$ (6,663)
Basic and Diluted Net Loss Attributable to Common Stockholders	$ (0.15)
Adjustments
Selected Statement of Operations Data
Provision For (Benefit From) Income Taxes	$ (3,559)
Consolidated Net Loss	3,559
Net income (loss) attributable to common stockholders	$ 3,559
Basic and Diluted Net Loss Attributable to Common Stockholders	$ 0.08