Balance Sheet Information (Tables)

6 Months Ended

Jun. 30, 2015

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Summary of Inventories

Inventories consisted of the following:

	June 30,		December 31,
	2015		2014
Raw materials	$	10,921	$	10,160
Work in process		925		915
Finished goods		5,850		5,283
Inventories, net	$	17,696	$	16,358

Summary of Property and Equipment

Property and equipment consisted of the following:

	June 30,			December 31,
	2015			2014
Building	$	6,231		$	6,229
Computers and office equipment		10,800			10,435
Manufacturing and test equipment		12,715			11,880
Furniture and fixtures		1,257			1,214
Leasehold improvements		894			909
Motor vehicles		117			117
Total property and equipment		32,014			30,784
Less: Accumulated depreciation and amortization		(19,156	)		(17,712	)
Land		1,770			1,770
Property and equipment, net	$	14,628		$	14,842

Summary of Accrued Liabilities

Accrued liabilities consisted of the following:

	June 30,		December 31,
	2015		2014
Paid time off	$	1,535	$	1,247
Inventory receipts		1,476		2,471
Due to Nexgen Parties—working capital adjustment		892		0
Payroll, bonuses, and other employee benefits		789		1,539
Professional fees and contractors		694		223
Employee stock purchase plan		350		314
Warranties		304		304
Deferred revenues		208		1,262
Real estate taxes		167		181
Income and sales taxes		98		266
Executive deferred compensation		0		2,043
Other		448		361
Total	$	6,961	$	10,211

Summary of Long-term Liabilities

Long-term liabilities consist of the following:

	June 30,		December 31,
	2015		2014
Due to Nexgen Parties—contingent consideration	$	1,000	$	0
Deferred rent		248		258
Long-term obligations under capital leases		131		135
Deferred revenues		47		55
	$	1,426	$	448