FIXED ASSETS (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Dec. 31, 2015
FIXED ASSETS
Total	$ 123,843		$ 115,241
Less: accumulated depreciation	(27,997)		(24,917)
Fixed assets, net	95,846		90,324
Depreciation expense	3,100	$ 2,700
Capitalized interest	300	$ 200
Foreign Property, Plant and Equipment, Net	28,400		25,900
Machinery and laboratory equipment
FIXED ASSETS
Total	31,086		29,864
Leasehold improvements
FIXED ASSETS
Total	32,359		30,834
Computer equipment and software
FIXED ASSETS
Total	4,724		4,007
Office furniture and equipment
FIXED ASSETS
Total	1,440		1,439
Construction in progress
FIXED ASSETS
Total	$ 54,234		$ 49,097