Consolidated Statements Of Cash Flows (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 29, 2012	Jul. 01, 2011
Cash flows from operating activities:
Consolidated net income	$ 6,280	$ 16,337
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	7,226	7,699
Share-based compensation	2,323	1,760
Deferred income taxes	(18)	(253)
Earnings from equity investment	(220)	(1,413)
Non-cash interest expense	536	459
Non-cash restructuring charges	2,545	34
Other non-cash items	109	24
Changes in operating assets and liabilities:
Accounts receivable	(2,824)	(2,620)
Inventories	(2,653)	(3,196)
Prepaid expenses and other current assets	1,342	4,200
Deferred revenue	(3,621)	(7,853)
Accounts payable, accrued expenses and income taxes receivable and payable	7,415	3,834
Other non-current assets and liabilities	411	(1,122)
Cash provided by operating activities	18,851	17,890
Cash flows from investing activities:
Purchases of property, plant and equipment	(2,625)	(1,698)
Proceeds from the sale of property, plant and equipment	205
Cash used in investing activities	(2,420)	(1,698)
Cash flows from financing activities:
Other financing activities	(29)
Capital lease payments	(412)
Repayments of debt	(5,000)
Repayments of revolving credit facility	(10,000)
Cash used in financing activities	(15,441)
Effect of exchange rates on cash and cash equivalents	(67)	1,026
Increase in cash and cash equivalents	923	17,218
Cash and cash equivalents, beginning of period	54,835	56,781
Cash and cash equivalents, end of period	55,758	73,999
Supplemental disclosure of cash flow information:
Cash paid for interest	1,016	6,605
Cash paid for income taxes	445	1,106
Income tax refunds received	222	14
Supplemental disclosure of non cash investing and financing activity:
Issuance of PIK notes		$ 532