Inventories (Tables)

3 Months Ended

Mar. 31, 2015

Inventory Disclosure [Abstract]

Inventories

Inventories consist of the following:

	March 31, 2015		December 31, 2014
Raw materials	$	16,777	$	16,712
Work in progress	24,254		22,960
Manufactured and purchased components	21,241		21,296
Finished goods	31,848		32,403
Product inventory	94,120		93,371
Capitalized contract costs	27,626		20,908
Total inventories	$	121,746	$	114,279