EQUIPMENT AND LEASEHOLD IMPROVEMENTS (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015	Dec. 31, 2015
Equipment and leasehold improvements
Total	$ 23,293		$ 23,293		$ 21,182
Less accumulated depreciation and amortization	(13,859)		(13,859)		(12,484)
Equipment and leasehold improvements, net	9,434		9,434		8,698
Depreciation and amortization expenses	806	$ 688	1,542	$ 1,308
Office equipment
Equipment and leasehold improvements
Total	12,011		12,011		11,193
Furniture and fixtures
Equipment and leasehold improvements
Total	3,250		3,250		2,916
Leasehold improvements
Equipment and leasehold improvements
Total	$ 8,032		$ 8,032		$ 7,073