EQUIPMENT AND LEASEHOLD IMPROVEMENTS (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Dec. 31, 2015
Equipment and leasehold improvements
Total	$ 21,973		$ 21,182
Less accumulated depreciation and amortization	(13,040)		(12,484)
Equipment and leasehold improvements, net	8,933		8,698
Depreciation and amortization expenses	736	$ 620
Office equipment
Equipment and leasehold improvements
Total	11,675		11,193
Furniture and fixtures
Equipment and leasehold improvements
Total	3,073		2,916
Leasehold improvements
Equipment and leasehold improvements
Total	$ 7,225		$ 7,073