Commitments and Contingencies (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Future minimum lease payments for operating leases [Abstract]
2015	$ 8,295,000
2016	5,972,000
2017	4,472,000
2018	2,164,000
2019	1,940,000
Thereafter	4,025,000
Total future minimum lease payments for operating leases	26,868,000
Rent expense for leases	7,500,000	4,900,000	3,400,000
Other commitments [Abstract]
Outstanding purchase orders related to raw materials	50,400,000	23,400,000
Outstanding purchase orders related to capital expenditures	3,700,000	3,000,000
Loss Contingencies [Line Items]
Payment to SynQor	10,900,000
Amount received from customer	2,100,000
Subsequent Event [Line Items]
Noncurrent liability and offsetting indemnification asset	12,000,000
Subsequent Event [Member]
Subsequent Event [Line Items]
Noncurrent liability and offsetting indemnification asset	12,000,000
SynQor, Inc [Member]
Loss Contingencies [Line Items]
Number of defendants		11
Damages awarded	$ 700,000