Balance Sheet Components (Tables)

3 Months Ended

Mar. 31, 2013

Accounts Receivable, Net

Accounts receivable, net consists of the following (in thousands):

	March 31,  2013			December 31,  2012
Accounts receivable	$	58,878		$	66,338
Trade notes receivable		5,375			4,979
Allowance for doubtful accounts		(986	)		(963	)
	$	63,267		$	70,354

Inventories

Inventories consist of the following (in thousands):

	March 31,  2013		December 31,  2012
Raw materials	$	26,332	$	20,520
Work in process		20,560		8,603
Finished goods (1)		14,967		14,670
	$	61,859	$	43,793

(1) Finished goods inventory at offsite managed inventory locations was $4.8 million and $4.5 million as of March 31, 2013 and December 31, 2012, respectively.

Purchased Intangible Assets

Purchased intangible assets consist of the following (in thousands):

	March 31, 2013							December 31, 2012
	GrossAssets		Accumulated Amortization			NetAssets		Gross Assets		Accumulated Amortization			Net Assets
Technology and patents	$	34,295	$	(23,405	)	$	10,890	$	32,176	$	(22,869	)	$	9,307
Customer relationships		15,128		(8,392	)		6,736		11,898		(8,148	)		3,750
Leasehold interest		1,358		(234	)		1,124		1,355		(241	)		1,114
Noncompete agreements		950		(934	)		16		950		(908	)		42
	$	51,731	$	(32,965	)	$	18,766	$	46,379	$	(32,166	)	$	14,213

Amortization Expense of Purchased Intangible Assets

Amortization expense relating to technology and patents and the leasehold interest intangible assets is included within cost of goods sold, and customer relationships and the noncompete agreements within operating expenses. The following table presents details of the amortization expense of the Company’s purchased intangible assets as reported in the condensed consolidated statements of operations (in thousands):

	Three months ended March 31,
	2013		2012
Cost of goods sold	$	428	$	598
Operating expenses		321		354
Total	$	749	$	952

Estimated Future Amortization Expense of Purchased Intangible Assets

The estimated future amortization expense of purchased intangible assets as of March 31, 2013, is as follows (in thousands):

2013 (remaining 9 months)	$	3,617
2014		4,505
2015		4,490
2016		3,743
2017		814
Thereafter		1,597
	$	18,766

Accrued Expenses and Other Current Liabilities

Accrued and other current liabilities consist of the following (in thousands):

	March 31,  2013		December 31,  2012
Employee-related	$	9,731	$	12,293
Other		15,143		7,666
	$	24,874	$	19,959

Summary of Movement in Warranty Accrual

The table below summarizes the movement in the warranty accrual (in thousands):

	Three months ended March 31,
	2013		2012
Beginning balance	$	1,072	$	1,443
Warranty accruals		26		19
Settlements and adjustments		86		(247	)
Ending balance	$	1,184	$	1,215

Other Noncurrent Liabilities

Other noncurrent liabilities consist of the following (in thousands):

	March 31, 2013		December 31, 2012
Employee-related	$	6,712	$	188
Penalty payment derivative (Note 11)		138		138
Other		1,297		1,536
	$	8,147	$	1,862