EQUIPMENT AND LEASEHOLD IMPROVEMENTS (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2016
Equipment and leasehold improvements, net
Total	$ 25,644		$ 23,895
Less accumulated depreciation and amortization	(16,306)		(15,498)
Equipment and leasehold improvements, net	9,338		8,397
Depreciation and amortization expenses	857	$ 736
Office equipment
Equipment and leasehold improvements, net
Total	12,548		12,489
Furniture and fixtures
Equipment and leasehold improvements, net
Total	3,262		3,255
Leasehold improvements
Equipment and leasehold improvements, net
Total	$ 9,834		$ 8,151