Property and Equipment (Tables)

12 Months Ended

Dec. 31, 2014

Property, Plant and Equipment [Abstract]

Property and Equipment

Depreciation and amortization of property and equipment are provided over their estimated useful lives, using the straight-line method, as follows:

Computer equipment and related software	3 - 5 years
Leasehold and building improvements	Shorter of the lease term or the estimated useful life
Furniture and fixtures	5 - 7 years
Equipment	3 - 12 years

Property and equipment consist of the following assets:

	December 31, 2014			December 31, 2013
	(In thousands)
Equipment	$	42,829		$	40,180
Furniture and fixtures	5,689			5,260
Leasehold improvements	8,701			7,394
Purchased software	28,920			20,199
Construction in progress	1,538			2,649
	87,677			75,682
Accumulated depreciation and amortization	(51,499		)	(40,428		)
Total property and equipment, net	$	36,178		$	35,254