LONG-TERM LIABILITIES (Schedule of Long-Term Liabilities) (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Accounts Payable and Accrued Liabilities, Noncurrent [Abstract]
Deferred rent	$ 28,944	$ 26,904
Other long-term liabilities	3,895	3,833
Total long-term liabilities	$ 32,839	$ 30,737	[1]

[1] As of January 1, 2018, the Company adopted Accounting Standards Update 2014-09, "Revenue from Contracts with Customers (Topic 606)" ("ASC 606"), using the full retrospective method. Accordingly, the Company has recast certain amounts in prior periods presented. See Note 1 below for additional discussion.