Acquisition of Competitor's Assets (Narrative) (Details) - USD ($) $ in Thousands	Nov. 07, 2013	Dec. 31, 2016	Dec. 31, 2015
Acquisition of Competitors Assets [Abstract]
Customer Contract Intangible Acquired from Competitor	$ 21,690
Government Contract Backlog Acquired from Competitor	188,000
Inventory Acquired from Competitor	11,590
Equipment Acquired from Competitor	14,245
Acquisition of Competitors Assets Consideration Transferred Total	47,803
Acquisition of Competitors Assets Payments to Acquire Gross	46,465
Acquisition of Competitors Assets Consideration Transferred Liabilities Incurred	$ 1,338
Inventory		$ 95,403	$ 88,909
Machinery and Equipment, Gross		$ 49,218	$ 48,701