OTHER LONG-TERM LIABILITIES (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Other Liabilities Disclosure [Abstract]
Long-term deferred rent	$ 0	$ 5,122
Long-term accrued restructuring	0	188
Long-term deferred compensation	5,186	4,992
Other long-term liabilities	$ 5,646	10,302
Total long-term liabilities		$ 10,302