INTANGIBLE ASSETS AND GOODWILL (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Intangible Assets and Goodwill
Goodwill	$ 8,965,000	$ 8,965,000
Finite-lived intangible asset
Accumulated Amortization	(4,776,000)	(3,763,000)
Total Intangible Assets
Cost of total intangible assets	27,596,000	27,596,000
Intangible Assets, Net (Excluding Goodwill)	22,820,000	23,833,000
Amortization expense for intangible assets	1,013,000	1,090,000	1,913,000
Estimated future amortization expense of intangible assets
2014	1,000,000
2015	1,000,000
2016	1,000,000
2017	900,000
2018	900,000
Amgen Amendment
Finite-lived intangible asset
Estimated Life	16 years
Cost	14,500,000	14,500,000
Accumulated Amortization	(3,812,000)	(2,915,000)
Net	10,688,000	11,585,000
Core Technology
Finite-lived intangible asset
Estimated Life	11 years
Cost	1,296,000	1,296,000
Accumulated Amortization	(964,000)	(848,000)
Net	332,000	448,000
IPR&D
Indefinite-lived intangible assets:
Indefinite-lived intangible assets	$ 11,800,000	$ 11,800,000