DISCONTINUED OPERATIONS - Balance Sheets (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Current Assets:
Accounts receivable, net		$ 16,602
Prepaid expenses and other current assets	$ 6,839	7,243
Total current assets from discontinued operations	6,839	23,845
Property and equipment, net		580
Intangible assets, net		330,084
Total assets from discontinued operations	6,839	354,509
Current Liabilities:
Accounts payable and accrued expenses	1,959	11,927
Current portion of deferred revenue		3,523
Total current liabilities discontinued operations	1,959	15,450
Other long-term liabilities		3,629
Total liabilities discontinued operations	$ 1,959	$ 19,079