Consolidated Statements Of Cash Flows (USD $) In Thousands	6 Months Ended
	Jul. 02, 2011	Jul. 03, 2010
Cash flows from operating activities:
Net (loss) earnings	$ (4,050)	$ 4,459
Adjustments to reconcile net earnings to net cash provided by operating activities:
Depreciation and amortization	9,861	9,819
Deferred income taxes	(3,191)	(119)
Stock-based compensation expense	992	885
Change in fair value of contingent consideration liability	0	304
Excess tax benefits from stock-based compensation	(130)	0
Payment for acquisition of business under contingent consideration arrangement	(325)	(1,248)
Changes in operating assets and liabilities:
Trade accounts receivable	6,742	(16,503)
Costs and estimated earnings in excess of billings on long-term contracts	(1,708)	(545)
Billings in excess of costs and estimated earnings on long-term contracts	(2,304)	3,035
Inventories	(6,407)	(6,112)
Accounts payable	9,897	4,105
Income taxes	1,596	316
Accrued compensation and retirement costs	(7,244)	459
Deferred revenue	1,413	3,287
Other	85	4,041
Net cash provided by operating activities in continuing operations	5,227	6,183
Net cash used in operating activities in discontinued operations	0	(8,810)
Net cash provided by (used in) operating activities	5,227	(2,627)
Cash flows from investing activities:
Purchases of property, plant and equipment	(5,726)	(3,820)
Proceeds from sales of assets	356	24
Net cash used in investing activities	(5,370)	(3,796)
Cash flows from financing activities:
Net borrowings under revolving credit facility	13,500	12,000
Repayment of other debt	(804)	(687)
Deferred financing costs paid	0	(28)
Payment for acquisition of business under contingent consideration arrangement	(626)	(5,952)
Payments for repurchase and retirement of common shares	(121)	(51)
Excess tax benefits from stock-based compensation	130	0
Proceeds from exercises of stock options	2,738	13
Net cash provided by financing activities	14,817	5,295
Effect of changes in exchange rates on cash and cash equivalents	2,235	(1,241)
Net change in cash and cash equivalents	16,909	(2,369)
Cash and cash equivalents at beginning of period	55,938	47,174
Cash and cash equivalents at end of period	$ 72,847	$ 44,805