Goodwill and Other Intangible Assets (Tables)

3 Months Ended

Mar. 31, 2013

Goodwill and Other Intangible Assets

Summary of the Company's amortizable intangible assets

	March 31, 2013				December 31, 2012
	Gross Carrying Amount		Accumulated Amortization		Gross Carrying Amount		Accumulated Amortization
Customer relationships	$	166,000	$	57,800	$	166,800	$	54,000
Proprietary technology	44,200		19,700		44,200		18,800
License agreements	6,000		5,500		6,000		5,300
Trade names and other	9,400		7,800		9,400		7,700
Total	$	225,600	$	90,800	$	226,400	$	85,800