FIXED ASSETS, NET

12 Months Ended

Dec. 31, 2015

Property, Plant and Equipment [Abstract]

Fixed assets, net consist of the following:



	December 31, 2015			December 31, 2014
	(in thousands)
Land	$	7,456		$	11,370
Buildings and improvements	464,918			516,643
Machinery and equipment	934,174			934,951
Furniture and fixtures	17,889			18,620
Construction-in-progress	6,963			9,800
	1,431,400			1,491,384
Less: Accumulated depreciation and amortization	(1,300,246		)	(1,333,103		)
	$	131,154		$	158,281

Depreciation expense on fixed assets for the years ended December 31, 2015, 2014 and 2013 was $43.6 million, $48.4 million and $66.6 million, respectively. Fixed assets acquired under capital leases were not material at December 31, 2015, 2014, and 2013.

During 2015, the Company completed the sale to an unrelated party of both its real estate holdings in Heilbronn, Germany and its equity interest in a privately-held company that provides facilities services to the tenants of that property. In addition, in a further effort to focus on its core business, the Company completed the sale of its XSense manufacturing assets and separately licensed to the buyer its XSense intellectual property assets, which the Company retained. See Note 14 Notes to Consolidated Financial Statements for a further discussion.

During 2014, management completed a strategic review of the XSense business and assessed its assets for possible impairment as changes in circumstances indicated that the carrying value of the Company’s assets might not be recoverable. As a result, the Company recognized a non-cash impairment charge of $25.3 million related to impairment of fixed assets and $1.3 million related to write-off of equipment deposit which are included in the consolidated statements of operations as cost of revenue.