Balance Sheet Information (Tables)

6 Months Ended

Jun. 30, 2012

Basis of Presentation/Balance Sheet Information [Abstract]

Summary of Inventories

Inventories consisted of the following at June 30, 2012 and December 31, 2011:

	June 30, 2012		December 31, 2011
Raw materials	$	9,547	$	10,573
Work in process		535		476
Finished goods		3,646		2,862
Inventories, net	$	13,728	$	13,911

Summary of property and equipment

Property and equipment consists of the following at June 30, 2012 and December 31, 2011:

	June 30, 2012			December 31, 2011
Building	$	6,207		$	6,207
Computers and office equipment		9,108			7,962
Manufacturing and test equipment		9,122			8,831
Furniture and fixtures		1,183			1,169
Leasehold improvements		301			230
Motor vehicles		27			27
Total property and equipment		25,948			24,426
Less: Accumulated depreciation and amortization		(13,602	)		(12,606	)
Land		1,770			1,770
Property and equipment, net	$	14,116		$	13,590

Summary of accrued liabilities

Accrued liabilities consist of the following at June 30, 2012 and December 31, 2011:

	June 30, 2012		December 31, 2011
Inventory receipts	$	1,183	$	1,457
Paid time off		1,052		940
Payroll, bonuses, and other employee benefits		454		3,015
Warranties		277		249
Employee stock purchase plan		256		232
Professional fees		218		197
Real estate taxes		154		159
Deferred revenues		116		78
Due to Sparco shareholders		3		198
Other		487		567
Total	$	4,200	$	7,092

Summary of Long-term liabilities

Long-term liabilities consist of the following:

	June 30, 2012		December 31, 2011
Executive deferred compensation plan	$	1,513	$	1,272
Income taxes		825		825
Deferred rent		64		42
Deferred revenues		7		5
	$	2,409	$	2,144