Inventories (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013		Sep. 30, 2014
Inventories [Abstract]
Raw materials	$ 17,099		$ 17,569
Work in progress	21,605		21,729
Manufactured and purchased components	21,675		22,323
Finished goods	40,572		29,789
Product inventory	100,951		91,410
Capitalized contract costs	12,227	[1]	19,689	[1]
Total inventories	113,178		111,099
Valuation Allowances and Reserves, Balance	2,057		0
Loss on Contracts	5,222
Billings in Excess of Cost	$ 3,165

[1] Net of a loss reserve on long-term production contracts of $0 and $2,057 as of September 30, 2014 and December 31, 2013 respectively