Supplementary Balance Sheet Information

3 Months Ended

Mar. 30, 2012

Supplementary Balance Sheet Information

7. Supplementary Balance Sheet Information

The following tables provide the details of selected balance sheet items as of the periods indicated (in thousands):

Inventories

	March 30, 2012		December 31, 2011
Raw materials	$	34,859	$	34,131
Work-in-process		17,636		18,506
Finished goods		11,241		11,048
Demo and consigned inventory		2,395		2,125
Total inventories	$	66,131	$	65,810

Prepaid Expenses and Other Current Assets

	March 30, 2012		December 31, 2011
Prepaid expenses	$	4,411	$	4,694
Deferred cost of goods sold		1,409		1,998
Other current assets		1,210		1,275
Total	$	7,030	$	7,967

Accrued Expenses and Other Current Liabilities

	March 30, 2012		December 31, 2011
Accrued compensation and benefits	$	7,266	$	9,572
Accrued warranty		3,342		3,506
Customer deposits		5,507		3,630
Other		8,623		8,933
Total	$	24,738	$	25,641

Accrued Warranty

	March 30, 2012			April 1, 2011
Balance at beginning of the period	$	3,506		$	3,977
Provision charged to cost of goods sold		757			1,042
Use of provision		(971	)		(1,274	)
Foreign currency exchange rate changes		50			72
Balance at end of period	$	3,342		$	3,817