CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 30, 2012	Apr. 01, 2011
Cash flows from operating activities:
Consolidated net income	$ 1,399	$ 6,262
Adjustments to reconcile net income to net cash from operating activities:
Depreciation and amortization	3,800	3,832
Share-based compensation	1,282	988
Deferred income taxes		(114)
Earnings from equity investment	(177)	(1,028)
Non-cash interest expense	274	361
Non-cash restructuring charges	1,318	17
Other non-cash items	(21)	142
Changes in operating assets and liabilities:
Accounts receivable	(846)	(80)
Inventories	(273)	(2,221)
Prepaid expenses and other current assets	987	735
Deferred revenue	(2,238)	(2,033)
Accounts payable, accrued expenses and income taxes receivable and payable	3,486	(758)
Other non-current assets and liabilities	96	(494)
Cash provided by operating activities	9,087	5,609
Cash flows from investing activities:
Purchases of property, plant and equipment	(1,398)	(1,194)
Cash used in investing activities	(1,398)	(1,194)
Cash flows from financing activities:
Capital lease payments	(228)
Repayments of debt	(2,500)
Repayments of revolving credit facility	(10,000)
Cash used in financing activities	(12,728)
Effect of exchange rates on cash and cash equivalents	562	141
(Decrease) increase in cash and cash equivalents	(4,477)	4,556
Cash and cash equivalents, beginning of period	54,835	56,781
Cash and cash equivalents, end of period	50,358	61,337
Supplemental disclosure of cash flow information:
Cash paid for interest	541	3,294
Cash paid for income taxes	77	562
Income tax refunds received	62
Supplemental disclosure of non cash financing activity:
Issuance of PIK notes		$ 532