Property and Equipment (Tables)

12 Months Ended

Dec. 31, 2013

Property Plant And Equipment [Abstract]

Components of Property and Equipment

Property and equipment, which includes assets under capital leases, is comprised of the following (in thousands):

	As of
	December 31, 2013		December 31, 2012
Buildings	$	4,613	$	2,134
Land		504		504
Machinery, equipment and tooling		110,728		88,222
Furniture and office equipment		13,448		12,672
Computers and software		139,723		130,357
Automobiles		18		18
Leasehold improvements		17,880		16,380
Projects in progress – computers and software		2,079		2,217
Projects in progress - other		6,675		15,561
		295,668		268,065
Less accumulated depreciation and amortization		(186,080)		(166,716)
Net property and equipment	$	109,588	$	101,349

Other Items Related to Property and Equipment

Other items related to property and equipment are as follows (in thousands):

	As of December 31,
	2013		2012
Unamortized computer software costs	$	43,317	$	48,873

Depreciation and Amortization Related to Property and Equipment

	Year Ended December 31,
	2013		2012		2011
Amortization of capitalized software	$	8,688	$	7,912	$	6,180
Total depreciation expense charged to income		24,727		21,504		20,680