Inventories (Details) (USD $)	3 Months Ended
	Mar. 31, 2014	Dec. 31, 2014	Mar. 31, 2015
Inventories disclosure
Raw materials		$ 14,188,000	$ 15,757,000
Work in process		5,965,000	5,900,000
Finished goods		20,457,000	14,282,000
Total inventories		40,610,000	35,939,000
Raw materials		7,798,000	5,908,000
Total Inventories		48,408,000	41,847,000
Inventory expensed	1,437,000
Fair Value Adjustment to Inventory
Inventories disclosure
Inventories		30,300,000
Fair value adjustment		26,100,000
Cost of Sales
Inventories disclosure
Inventory expensed			3,600,000
Cost of Sales | Fair Value Adjustment to Inventory
Inventories disclosure
Fair value adjustment			2,900,000
Inventory expensed			$ 3,300,000