Goodwill (Tables)

12 Months Ended

Dec. 31, 2014

Goodwill and Intangible Assets Disclosure [Abstract]

Changes in the Carrying Value of Goodwill

The changes in the carrying value of goodwill were as follows (in thousands):

	MVSD		SISD		Consolidated
Balance as of December 31, 2012	$	77,388	$	4,301	$	81,689
Foreign currency exchange rate changes	—		—		—
Balance as of December 31, 2013	77,388		4,301		81,689
Foreign currency exchange rate changes	—		—		—
Balance as of December 31, 2014	$	77,388	$	4,301	$	81,689