Financial Statement Details (Tables)

12 Months Ended

Dec. 31, 2013

Organization Consolidation And Presentation Of Financial Statements [Abstract]

Summary of Marketable Securities Available-for-Sale

The Company’s portfolio of available-for-sale securities by contractual maturity consists of the following (in thousands):

December 31, 2013	Maturity in Years		Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Estimated Fair Value
Available-for-sale:
Government agency securities		1 or less	$	2,350	$	1	$	0	$	2,351
Municipal bonds		1 or less		2,828		1		0		2,829
Certificates of deposit		1 or less		3,360		0		0		3,360
Corporate debentures / bonds		1 or less		10,635		3		0		10,638
Total short-term marketable securities				19,173		5		0		19,178
Available-for-sale:
Certificates of deposit		1 to 2		1,300		0		0		1,300
Corporate debentures / bonds		1 to 2		2,143		0		0		2,143
Total long-term marketable securities				3,443		0		0		3,443
			$	22,616	$	5	$	0	$	22,621
December 31, 2012	Maturity in Years		Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Estimated Fair Value
Available-for-sale:
Government agency securities		1 or less	$	3,265	$	1	$	0	$	3,266
Municipal bonds		1 or less		11,246		14		0		11,260
Certificates of deposit		1 or less		6,200		5		0		6,205
Corporate debentures / bonds		1 or less		17,330		3		0		17,333
Total short-term marketable securities				38,041		23		0		38,064
Available-for-sale:
Certificates of deposit		1 to 2		1,200		1		0		1,201
Total long-term marketable securities				1,200		1		0		1,201
			$	39,241	$	24	$	0	$	39,265

Summary of Inventories

Inventories consist of the following (in thousands):

	December 31,
	2013		2012
Finished goods	$	20,870	$	26,776
Raw materials and components		6,923		12,240
	$	27,793	$	39,016

Summary of Property and Equipment

Property and equipment consists of the following (in thousands):

	December 31,
	2013			2012
Test equipment	$	52,108		$	53,368
Computer equipment and purchased software		10,814			12,310
Product tooling		3,204			2,232
Furniture and fixtures		2,015			2,219
Leasehold improvements		4,094			4,802
		72,235			74,931
Less—accumulated depreciation and amortization		(62,334	)		(59,702	)
	$	9,901		$	15,229

Summary of Accrued Expenses

Accrued expenses consist of the following (in thousands):

	December 31,
	2013		2012
Royalties	$	4,243	$	4,349
Payroll and related expenses		4,828		7,788
Product warranty		2,244		2,329
Market development funds and price protection		3,059		2,147
Professional fees		1,040		1,549
Deferred revenue		2,999		4,630
Restructuring		610		0
Other		4,248		5,008
	$	23,271	$	27,800

Summary of Accrued Warranty Obligations

Accrued warranty obligations consist of the following (in thousands):

	2013			2012
Warranty liability at beginning of period	$	2,329		$	1,525
Additions charged to operations		5,055			6,261
Deductions from liability		(5,140	)		(5,457	)
Warranty liability at end of period	$	2,244		$	2,329