ORGANIZATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Stock-Based Compensation (Details) - Performance-based Restricted Stock Units - The 2014 Plan	12 Months Ended
	Dec. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	3 years
Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards vesting by the end of the first year, percentage (at least)	0.00%
Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards vesting by the end of the first year, percentage (at least)	200.00%