Property and Equipment, Net (Tables)

12 Months Ended

Dec. 31, 2015

Property Plant And Equipment [Abstract]

Summary of Property and Equipment

Property and equipment consisted of the following at December 31, 2015 and 2014 (in thousands):

	2015			2014			Estimated Useful Lives in Years
Equipment	$	34,040		$	19,604		3-7
Leasehold improvements		9,349			3,541		2-5
Furniture and fixtures		4,398			1,982			7
Computer hardware		5,175			4,249			3
Computer software		7,717			5,033		2-3
Assets not yet placed in service		432			495			—
Subtotal		61,111			34,904
Less accumulated depreciation and amortization		(26,534	)		(19,822	)
Property and equipment, net	$	34,577		$	15,082

Depreciation Expense on Property and Equipment, Including Leased Assets

Depreciation and amortization expense on property and equipment, including leased assets in each period was as follows (in thousands): 

	For the years ended December 31,
	2015		2014		2013
Depreciation and amortization expense	$	6,730	$	5,345	$	4,189

Property and Equipment under Capital Leases

Property and equipment under capital leases, included above, consists of the following at December 31, 2015 and 2014 (in thousands):

	2015			2014
Equipment	$	13,655		$	8,729
Furniture and fixtures		1,250			1,250
Computer hardware		2,846			2,454
Computer software		651			523
Leasehold improvements		99			44
Subtotal		18,501			13,000
Less accumulated depreciation and amortization		(9,047	)		(4,959	)
Property and equipment under capital leases, net	$	9,454		$	8,041