EQUIPMENT AND LEASEHOLD IMPROVEMENTS (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014
Equipment and leasehold improvements
Total	$ 19,529		$ 19,529		$ 17,576
Less accumulated depreciation and amortization	(11,392)		(11,392)		(10,238)
Equipment and leasehold improvements, net	8,137		8,137		7,338
Depreciation and amortization expenses	688	$ 519	1,308	$ 1,053
Office equipment
Equipment and leasehold improvements
Total	10,173		10,173		9,387
Furniture and fixtures
Equipment and leasehold improvements
Total	2,820		2,820		2,258
Leasehold improvements
Equipment and leasehold improvements
Total	$ 6,536		$ 6,536		$ 5,931