Balance Sheet Information (Tables)

3 Months Ended

Mar. 31, 2017

Organization Consolidation And Presentation Of Financial Statements [Abstract]

Summary of Inventories

Inventories consisted of the following:

	March 31,		December 31,
	2017		2016
Raw materials	$	7,651	$	8,718
Work in process		1,211		1,486
Finished goods		3,830		4,238
Inventories, net	$	12,692	$	14,442

Summary of Property and Equipment

Property and equipment consisted of the following:

	March 31,			December 31,
	2017			2016
Building	$	6,351		$	6,351
Computers and office equipment		12,393			11,577
Manufacturing and test equipment		13,160			12,940
Furniture and fixtures		1,258			1,239
Leasehold improvements		1,254			1,191
Motor vehicles		19			20
Total property and equipment		34,435			33,318
Less: Accumulated depreciation and amortization		(23,146	)		(22,479	)
Land		1,770			1,770
Property and equipment, net	$	13,059		$	12,609

Summary of Accrued Liabilities

Accrued liabilities consisted of the following:

	March 31,		December 31,
	2017		2016
Payroll, bonuses, and other employee benefits	$	1,263	$	2,029
Paid time off		1,242		1,230
Inventory receipts		1,163		1,622
Warranties		420		394
Income and sales taxes		410		546
Professional fees and contractors		191		320
Real estate taxes		190		152
Customer prepayments		129		164
Employee stock purchase plan		124		300
Deferred revenues		93		104
Restructuring		77		126
Other		319		190
Total	$	5,621	$	7,177

Summary of Long-term Liabilities

Long-term liabilities consisted of the following:

	March 31,		December 31,
	2017		2016
Long-term obligations under capital leases	$	244	$	157
Deferred rent		141		156
Restructuring		86		70
Deferred revenues		18		8
Total	$	489	$	391