Consolidated Statements Of Cash Flows (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 29, 2013	Mar. 30, 2012
Cash flows from operating activities:
Consolidated net income	$ 2,118	$ 1,399
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	5,482	3,800
Share-based compensation	1,544	1,282
Deferred income taxes	(974)
Earnings from equity investment	(361)	(177)
Non-cash interest expense	253	274
Non-cash restructuring charges	(241)	1,318
Other non-cash items	627	(21)
Changes in operating assets and liabilities:
Accounts receivable	(6,697)	(846)
Inventories	1,177	(273)
Prepaid expenses, income taxes receivable and other current assets	681	1,025
Deferred revenue	(682)	(2,238)
Accounts payable, accrued expenses, income taxes payable and other current liabilities	1,251	3,448
Other non-current assets and liabilities	430	96
Cash provided by operating activities	4,608	9,087
Cash flows from investing activities:
Purchases of property, plant and equipment	(1,715)	(1,398)
Acquisition of business	(82,653)
Cash used in investing activities	(84,368)	(1,398)
Cash flows from financing activities:
Proceeds from revolving credit facility	60,000
Repayments of long-term debt	(1,875)	(2,500)
Repayments of borrowings under the revolving credit facility	(5,000)	(10,000)
Payments for debt issuance costs	(145)
Payments of withholding taxes from stock-based awards	(639)
Capital lease payments	(233)	(228)
Cash provided by (used in) financing activities	52,108	(12,728)
Effect of exchange rates on cash and cash equivalents	(1,799)	562
Decrease in cash and cash equivalents	(29,451)	(4,477)
Cash and cash equivalents, beginning of period	65,788	54,835
Cash and cash equivalents, end of period	36,337	50,358
Supplemental disclosure of cash flow information:
Cash paid for interest	378	541
Cash paid for income taxes	449	77
Income tax refunds received	$ 3	$ 62