Inventories (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014
Inventory Disclosure [Abstract]
paymentofcashconsideration	$ 1,700	$ 4,800
Inventories [Abstract]
Raw materials	16,051		$ 16,712
Work in progress	25,470		22,960
Manufactured and purchased components	21,475		21,296
Finished goods	30,350		32,403
Product inventory	93,346		93,371
Capitalized contract costs	29,850		20,908
Total inventories	$ 123,196		$ 114,279