THE COMPANY AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Net Income (Loss) Per Common Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Numerator:
Net income (loss)	$ 15,950	$ (1,163)
Denominator:
Weighted-average common shares outstanding, basic (in shares)	23,133,370	22,708,699
Weighted-average common shares outstanding, diluted (in shares)	23,216,528	22,708,699
Basic (in dollars per share)	$ 0.69	$ (0.05)
Diluted (in dollars per share)	$ 0.69	$ (0.05)
Stock options
Schedule of Earnings per Share [Line Items]
Incremental shares attributable to share-based arrangements	572,501	0