Current Liabilities (Tables)

6 Months Ended

Jun. 30, 2012

Accounts Payable and Accrued Liabilities, Current [Abstract]

Deferred Revenue, by Arrangement, Disclosure

Changes in our deferred service revenue are as follows:

	Three Months Ended						Six Months Ended
(In thousands)	June 30, 2012			July 2, 2011			June 30, 2012			July 2, 2011
Balance, beginning of the period	$	5,725		$	3,412		$	4,991		$	2,903
Additions	1,283			2,033			3,066			4,581
Revenue recognized	(1,406		)	(728		)	(2,455		)	(2,767		)
Balance, end of the period	$	5,602		$	4,717		$	5,602		$	4,717
Balance sheet classification
Deferred service income-short term	$	3,973		$	3,949
Deferred service income-long term	1,629			768
Balance, end of period	$	5,602		$	4,717

Schedule of Accrued Liabilities

Other current liabilities consist of the following:

(In thousands)	June 30, 2012		December 31, 2011
Salaries and benefits	$	8,950	$	10,023
Warranty accrual	2,795		2,398
Advanced billing	1,821		5,809
Accrued taxes-other	979		1,729
Capital lease, current portion	89		176
Other	2,568		2,238
Balance, end of the period	$	17,202	$	22,373

Schedule of Product Warranty Liability

Changes in our warranty accrual are as follows:

	Three Months Ended						Six Months Ended
(In thousands)	June 30, 2012			July 2, 2011			June 30, 2012			July 2, 2011
Balance, beginning of the period	$	2,165		$	2,424		$	2,398		$	2,111
Liabilities accrued for warranties issued	1,417			860			2,067			1,768
Warranty claims paid and utilized	(825		)	(328		)	(1,282		)	(690		)
Changes in accrued warranty liabilities	38			(282		)	(388		)	(515		)
Balance, end of the period	$	2,795		$	2,674		$	2,795		$	2,674