Property and Equipment

12 Months Ended

Dec. 31, 2015

Property, Plant and Equipment [Abstract]

Property and Equipment

7. Property and Equipment

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

	Useful Life (Years)	2015			2014
Manufacturing equipment	5	$	4,543		$	3,654
Lease and loaner instruments	1 -5		3,318			2,629
Prototype instruments	2		2,956			2,157
Computer equipment	3		1,847			1,430
Furniture and fixtures	5		1,390			831
Leasehold improvements	Various		5,874			4,888
Construction in progress			1,921			1,058
			21,849			16,647
Less: Accumulated depreciation and amortization			(12,435	)		(10,281	)
		$	9,414		$	6,366

Prototype instruments consist of nCounter instruments used in internal testing and other development activities.

Accumulated depreciation on lease and loaner instruments was $867,000 and $128,000 at December 31, 2015 and 2014, respectively.

Depreciation and amortization expense for the years ended December 31, 2015, 2014 and 2013 totaled approximately $2.3 million, $1.5 million and $1.8 million, respectively.