Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2012

Intangible assets are summarized as follows:

	December 31, 2012							December 31, 2011
	Gross Carrying Amount		Accumulated Amortization			Net Intangible Assets		Gross Carrying Amount		Accumulated Amortization			Net Intangible Assets
Amortized intangible assets:
Customer relationships	$	16,228	$	(4,704	)	$	11,524	$	16,137	$	(3,609	)	$	12,528
Patent costs		1,151		(420	)		731		513		(152	)		361
		17,379		(5,124	)		12,255		16,650		(3,761	)		12,889

Unamortized Intangible Assets

Unamortized intangible assets:
Trademarks		222		–			222		218		–			218
Total	$	17,601	$	(5,124	)	$	12,477	$	16,868	$	(3,761	)	$	13,107

Amortization Expense for Intangible Assets

Amortization expense for intangible assets was $1,385 and $1,219 in 2012 and 2011, respectively. Amortization expense related to intangible assets, which is an estimate for each future year and subject to change, is as follows:

2013	$	1,411
2014		1,229
2015		1,013
2016		888
2017		871
Thereafter		6,844
Total	$	12,256