Goodwill and Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2012

Goodwill and Intangible Assets Disclosure [Abstract]

Changes in the carrying amount of Goodwill

The changes in the carrying amount of Goodwill are as follows:

	Goodwill			Accumulated Impairment Losses			Total
Balance as of December 31, 2011	$	66,523		$	(46,220	)	$	20,303
Foreign currency fluctuations	2,062			(2,648		)	(586		)
Balance as of December 31, 2012	$	68,585		$	(48,868	)	$	19,717
Balance as of December 31, 2010	$	67,008		$	(46,585	)	$	20,423
Additions	688			—			688
Foreign currency fluctuations	(1,173		)	365			(808		)
Balance as of December 31, 2011	$	66,523		$	(46,220	)	$	20,303

Acquired Intangible Assets excluding Goodwill

The balances of acquired Intangible Assets, excluding Goodwill, as of December 31, are as follows:

	Customer Lists and Service Contracts			Trade Name			Technology			Total
Balance as of December 31, 2012
Original cost	$	23,817		$	4,657		$	7,197		$	35,671
Accumulated amortization	(9,907		)	(1,565		)	(2,806		)	(14,278		)
Carrying amount	$	13,910		$	3,092		$	4,391		$	21,393
Weighted-average original life (in years)	15			14			13
Balance as of December 31, 2011
Original cost	$	25,987		$	4,583		$	7,136		$	37,706
Accumulated amortization	(10,387		)	(1,209		)	(2,352		)	(13,948		)
Carrying amount	$	15,600		$	3,374		$	4,784		$	23,758
Weighted-average original life (in years)	14			14			13

Estimated aggregate amortization expense of Intangible Assets

Estimated aggregate amortization expense based on the current carrying amount of amortizable Intangible Assets for each of the five succeeding years is as follows:

2013	$	2,213
2014	2,178
2015	2,154
2016	2,141
2017	1,877
Thereafter	10,830
Total	$	21,393