Balance Sheet Information (Tables)

9 Months Ended

Sep. 30, 2017

Organization Consolidation And Presentation Of Financial Statements [Abstract]

Summary of Inventories

Inventories consisted of the following:

	September 30,		December 31,
	2017		2016
Raw materials	$	7,053	$	8,718
Work in process		1,324		1,486
Finished goods		4,451		4,238
Inventories, net	$	12,828	$	14,442

Summary of Property and Equipment

Property and equipment consisted of the following:

	September 30,			December 31,
	2017			2016
Building	$	6,351		$	6,351
Computers and office equipment		11,615			10,683
Manufacturing and test equipment		12,653			11,638
Furniture and fixtures		1,257			1,225
Leasehold improvements		1,348			1,191
Motor vehicles		20			20
Total property and equipment		33,244			31,108
Less: Accumulated depreciation and amortization		(22,787	)		(21,045	)
Land		1,770			1,770
Property and equipment, net	$	12,227		$	11,833

Summary of Accrued Liabilities

Accrued liabilities consisted of the following:

	September 30,		December 31,
	2017		2016
Payroll, bonuses, and other employee benefits	$	2,298	$	2,029
Inventory receipts		1,531		1,622
Paid time off		1,084		1,230
Warranties		418		394
Income and sales taxes		344		546
Professional fees and contractors		224		320
Deferred revenues		199		104
Employee stock purchase plan		128		300
Real estate taxes		122		152
Customer prepayments		45		164
Restructuring		24		126
Other		317		190
Total	$	6,734	$	7,177

Summary of Long-term Liabilities

Long-term liabilities consisted of the following:

	September 30,		December 31,
	2017		2016
Long-term obligations under capital leases	$	196	$	157
Deferred rent		107		156
Restructuring		84		70
Deferred revenues		43		8
Total	$	430	$	391