Balance Sheet Details

Property, Plant and Equipment, net

Property, plant and equipment, net is comprised of the following:



	As of December 31,
	2015			2014
	(In thousands)
Building	$	40,320		$	40,320
Computer software	20,012			21,412
Computer equipment	31,224			27,744
Furniture and fixtures	13,943			13,464
Leasehold improvements	7,098			7,052
Machinery	11,037			11,699
Construction in progress	637			425
	124,271			122,116
Less accumulated depreciation and amortization	(67,655		)	(58,093		)
	$	56,616		$	64,023

As of December 31, 2015 and 2014, for the Sunnyvale and Brecksville facilities, the Company had capitalized $40.3 million in building based on the estimated fair value of the portion of the unfinished spaces, capitalized interest on the unfinished spaces and construction costs related to the build-out of the facilities. See Note 11, "Commitments and Contingencies" for additional details.

Depreciation expense for the years ended December 31, 2015, 2014 and 2013 was $12.4 million, $13.6 million and $15.5 million, respectively.

Accumulated Other Comprehensive Gain (Loss)

Accumulated other comprehensive gain (loss) is comprised of the following:



	As of December 31,
	2015		2014
	(In thousands)
Foreign currency translation adjustments	$	95	$	86
Unrealized gain (loss) on available-for-sale securities, net of tax	278		(488		)
Total	$	373	$	(402	)