Inventories (Details) (USD $)	3 Months Ended								12 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Nov. 12, 2014
Inventories
Raw materials	$ 14,188,000				$ 3,157,000				$ 14,188,000	$ 3,157,000
Work in process	5,965,000				8,322,000				5,965,000	8,322,000
Finished goods	20,457,000				5,738,000				20,457,000	5,738,000
Total inventories	40,610,000				17,217,000				40,610,000	17,217,000
Raw materials	7,798,000								7,798,000
Total Inventories	48,408,000				17,217,000				48,408,000	17,217,000
Inventories disclosure
Inventories												30,300,000
Cost of product sales	11,758,000	2,968,000	2,743,000	2,837,000	3,326,000	2,547,000	3,145,000	2,942,000	20,306,000	11,960,000	14,220,000
Inventory expensed									1,309,000	2,175,000	1,822,000
Fair Value Adjustment to Inventory [Member]
Inventories disclosure
Inventories												26,100,000
Amount recognized in current period									1,300,000
Balance	24,800,000								24,800,000
2015									11,100,000
2016									3,500,000
2017									4,000,000
2018									3,500,000
2019									2,700,000
Research and Development Expense [Member]
Inventories disclosure
Inventory expensed									700,000	1,100,000
Cost of Sales [Member]
Inventories disclosure
Inventory expensed									$ 600,000	$ 1,100,000