Property and Equipment (Schedule of Property and Equipment) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Property, Plant and Equipment [Line Items]
Total property and equipment	$ 234,649	$ 203,386
Less: Accumulated depreciation and amortization	(126,931)	(105,865)
Total property and equipment, net	107,718	97,521
Land
Property, Plant and Equipment [Line Items]
Total property and equipment	903	903
Building
Property, Plant and Equipment [Line Items]
Total property and equipment	12,408	11,276
Machinery and equipment
Property, Plant and Equipment [Line Items]
Total property and equipment	151,429	134,666
Capitalized software
Property, Plant and Equipment [Line Items]
Total property and equipment	18,357	8,834
Office furniture and equipment
Property, Plant and Equipment [Line Items]
Total property and equipment	4,955	4,677
Leasehold improvements
Property, Plant and Equipment [Line Items]
Total property and equipment	31,514	29,503
Construction in progress
Property, Plant and Equipment [Line Items]
Total property and equipment	$ 15,083	$ 13,527
Minimum | Building
Property, Plant and Equipment [Line Items]
Useful Life (in years)	25 years
Minimum | Machinery and equipment
Property, Plant and Equipment [Line Items]
Useful Life (in years)	2 years
Minimum | Capitalized software
Property, Plant and Equipment [Line Items]
Useful Life (in years)	3 years
Minimum | Office furniture and equipment
Property, Plant and Equipment [Line Items]
Useful Life (in years)	1 year
Maximum | Building
Property, Plant and Equipment [Line Items]
Useful Life (in years)	30 years
Maximum | Machinery and equipment
Property, Plant and Equipment [Line Items]
Useful Life (in years)	7 years
Maximum | Capitalized software
Property, Plant and Equipment [Line Items]
Useful Life (in years)	5 years
Maximum | Office furniture and equipment
Property, Plant and Equipment [Line Items]
Useful Life (in years)	5 years