EQUIPMENT AND LEASEHOLD IMPROVEMENTS (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Equipment and leasehold improvements, net
Total	$ 23,895	$ 21,182
Less accumulated depreciation and amortization	(15,498)	(12,484)
Equipment and leasehold improvements, net	8,397	8,698
Depreciation and amortization expenses	3,183	2,635	$ 2,226
Office equipment
Equipment and leasehold improvements, net
Total	12,489	11,193
Furniture and fixtures
Equipment and leasehold improvements, net
Total	3,255	2,916
Leasehold improvements
Equipment and leasehold improvements, net
Total	$ 8,151	$ 7,073