Balance Sheet Information (Tables)

9 Months Ended

Sep. 30, 2013

Organization Consolidation And Presentation Of Financial Statements [Abstract]

Summary of Inventories

Inventories consisted of the following at September 30, 2013 and December 31, 2012:

	September 30, 2013		December 31, 2012
Raw materials	$	8,866	$	12,226
Work in process		739		789
Finished goods		5,633		4,558
Inventories, net	$	15,238	$	17,573

Summary of Property and Equipment

Property and equipment consists of the following at September 30, 2013 and December 31, 2012:

	September 30, 2013			December 31, 2012
Building	$	6,207		$	6,207
Computers and office equipment		9,443			9,968
Manufacturing and test equipment		10,665			9,495
Furniture and fixtures		1,211			1,256
Leasehold improvements		698			519
Motor vehicles		117			150
Total property and equipment		28,341			27,595
Less: Accumulated depreciation and amortization		(15,492	)		(14,590	)
Land		1,770			1,770
Property and equipment, net	$	14,619		$	14,775

Summary of Accrued Liabilities

Accrued liabilities consist of the following at September 30, 2013 and December 31, 2012:

	September 30,		December 31,
	2013		2012
Payroll, bonuses, and other employee benefits	$	2,634	$	859
Inventory receipts		1,570		2,191
Paid time off		1,120		1,067
Warranties		274		270
Deferred liabilities		197		127
Professional fees		158		268
Real estate taxes		131		170
Employee stock purchase plan		115		276
Restructuring		56		0
Sales tax		1		156
Other		321		515
Total	$	6,577	$	5,899

Summary of Long-term Liabilities

Long-term liabilities consist of the following:

	September 30,		December 31,
	2013		2012
Executive deferred compensation plan	$	1,797	$	1,652
Reserve for uncertain tax positions		842		842
Deferred rent		223		166
Deferred revenues		43		74
Long-term obligations under capital leases		0		2
	$	2,905	$	2,736