Goodwill (Tables)

12 Months Ended

Dec. 31, 2012

Disclosure - Goodwill - Additional Information [Abstract]

Carrying value of goodwill by reporting segment and the activity

The carrying value of goodwill by reporting segment and the activity for the two year period ending December 31, 2012 is as follows (in thousands):

	Thermal Vision and Measurement			Raymarine			Surveillance			Detection			Integrated Systems		Total
Balance, December 31, 2010	$	236,181		$	97,266		$	88,052		$	41,026		$	19,494	$	482,019
Goodwill from acquisitions	16,452			1,440			—			—			—		17,892
Currency translation adjustments	(1,344		)	(610		)	(90		)	—			—		(2,044		)
Other activity	(102		)	268			2,539			(2,864		)	635		476
Balance, December 31, 2011	251,187			98,364			90,501			38,162			20,129		498,343
Currency translation adjustments	2,039			2,380			316			—			—		4,735
Balance, December 31, 2012	$	253,226		$	100,744		$	90,817		$	38,162		$	20,129	$	503,078