Balance Sheet Details:

Inventories

Inventories are comprised of the following:



	December 31,
	2011		2012
Materials	$	27,153	$	31,629
Work-in-process	11,172		15,889
Finished goods	11,176		15,904
Total inventories	$	49,501	$	63,422

The Company has established reserves of $7,927 and $5,620 at December 31, 2011 and 2012, respectively, for slow moving and obsolete inventory. During 2011, the Company recorded a net charge in cost of revenues of $1,324 for the write-down of inventory for excess parts, for older product lines and for parts that were rendered obsolete by design and engineering advancements. In 2011, the Company disposed of $933 of inventory. During 2012, the Company recorded a net charge in cost of revenues of $2,934 for the write-down of inventory for excess parts, for older product lines and for parts that were rendered obsolete by design and engineering advancements. In 2012, the Company disposed of $5,241 of inventory.

Property, Plant and Equipment

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



	December 31,
	2011			2012
Land and building	$	4,997		$	4,997
Machinery and equipment	17,514			18,826
Furniture and fixtures	3,384			3,381
Computer equipment	6,350			7,789
Leasehold improvements	6,329			6,807
	38,574			41,800
Accumulated depreciation	(26,044		)	(29,891		)
Total property, plant and equipment, net	$	12,530		$	11,909

Depreciation expense amounted to $3,706, $4,210 and $3,680 for the years ended December 31, 2010, 2011, and 2012, respectively.

Other assets

Other assets is comprised of the following:



	December 31,
	2011		2012
Capitalized software	$	562	$	201
Other	5,172		1,893
Total other assets	$	5,734	$	2,094

Other current liabilities

Other current liabilities is comprised of the following:



	December 31,
	2011		2012
Litigation accrual	$	4,293	$	4,293
Other	5,031		4,066
Total other current liabilities	$	9,324	$	8,359

Other non-current liabilities

Other non-current liabilities is comprised of the following:



	December 31,
	2011		2012
Unrecognized tax benefits (including interest)	$	6,574	$	7,671
Other	2,178		2,166
Total non-current liabilities	$	8,752	$	9,837