Income Taxes (Deferred Tax Assets and Liabilities) (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Components of Deferred Tax Assets [Abstract]
Inventory	$ 3,769	$ 3,938
Net operating losses	34,669	6,421
Capitalized research and development	6,257	5,733
Deferred compensation	2,544	2,557
Accounts receivable	3,186	2,938
Compensation and benefits	6,645	7,365
Accrued pension	4,530	3,944
Research and development credit	8,164	7,094
Other	2,001	3,245
Foreign tax credit	1,112	0
Less: valuation allowances	(441)	(124)
Deferred Tax Assets, Net of Valuation Allowance	72,436	43,111
Components of Deferred Tax Liabilities [Abstract]
Goodwill and intangible assets	168,509	122,623
Depreciation	9,099	11,999
State taxes	10,123	7,427
Contingent interest	136	203
Deferred tax liabilities	187,867	142,252
Net liability	(115,431)	$ (99,141)
Cumulative amount of temporary difference	$ 108,800