EQUIPMENT AND LEASEHOLD IMPROVEMENTS (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016
Equipment and leasehold improvements, net
Total	$ 23,000		$ 23,000		$ 23,895
Less accumulated depreciation and amortization	(13,296)		(13,296)		(15,498)
Equipment and leasehold improvements, net	9,704		9,704		8,397
Depreciation and amortization expenses	822	$ 806	1,679	$ 1,542
Office equipment
Equipment and leasehold improvements, net
Total	9,419		9,419		12,489
Furniture and fixtures
Equipment and leasehold improvements, net
Total	3,365		3,365		3,255
Leasehold improvements
Equipment and leasehold improvements, net
Total	$ 10,216		$ 10,216		$ 8,151