Balance Sheet Components (Tables)

9 Months Ended

Sep. 30, 2012

Schedule of Inventories

Inventories are comprised of (in thousands):

	September 30, 2012		December 31, 2011
Raw materials	$	4,445	$	4,542
Work in process	3,396		2,486
Finished goods	7,296		2,374
	$	15,137	$	9,402

Schedule of Accrued Liabilities

Accrued liabilities consist of the following (in thousands):

	September 30, 2012		December 31, 2011
Accrued payroll and benefits	$	34,352	$	41,827
Accrued sales rebate	8,501		8,358
Accrued sales tax and value added tax	6,360		7,052
Unclaimed merger consideration	1,564		4,026
Accrued warranty	4,130		3,177
Accrued sales and marketing expenses	2,681		3,508
Accrued accounts payable	2,991		3,048
Accrued professional fees	2,165		654
Customer deposits	2,792		206
Accrued income taxes	461		426
Other	5,952		4,318
Total	$	71,949	$	76,600

Warranty Accrual

The following table reflects the change in our warranty accrual during the nine months ended September 30, 2012 and 2011, respectively (in thousands):

	Nine Months Ended September 30,
	2012			2011
Balance at beginning of period	$	3,177		$	2,607
Charged to cost of revenues	3,647			2,601
Assumed warranty from Cadent	—			350
Actual warranty expenditures	(2,694		)	(2,285		)
Balance at end of period	$	4,130		$	3,273