Summary Of Significant Accounting Policies (Comparison of Financial Statements as Previously Filed - Statement of Cash Flows) (Details) (USD $) In Thousands, unless otherwise specified	9 Months Ended		12 Months Ended
	Sep. 28, 2014	Sep. 29, 2013	Dec. 29, 2013
Cash flows from operating activities:
Net (loss) earnings	$ 5,650	$ (13,781)	$ (18,927)
Adjustments to reconcile net earnings (loss) to net cash provided by operating activities:
Depreciation and amortization	18,712	20,094
Amortization of debt issuance costs	325	1,221
Interest on financing liability	1,686	1,536
Deferred taxes		(858)
Stock-based compensation	4,349	5,145
Provision for losses on accounts receivable	75	(638)
Excess tax benefit on stock compensation	(6)	(594)
Loss on disposal of fixed assets	105	343
Litigation settlement	0	(6,584)
Gain on sale of subsidiary	0	(248)
Loss on sale of discontinued operations	0	13,043
Restructuring-related asset impairment		731
Accounts receivable	34,653	20,702
Inventories	(19,797)	(12,441)
Other current assets	4,678	(6,912)
Accounts payable	(8,844)	2,326
Income taxes	(987)	(1,950)
Unearned revenues - current	(131)	(4,424)
Restructuring reserve		(5,923)
Other liabilities	(6,417)	(14,995)
Net cash provided by (used in) operating activities	41,894	(4,207)
Cash flows from investing activities:
Acquisition of property, plant, and equipment and intangibles	(12,833)	(5,955)
Cash proceeds from the sale of discontinued operations	212	1,502
Cash proceeds from the sale of subsidiary	0	227
Other investing activities	77	1,151
Net cash used in investing activities	(12,544)	(3,075)
Cash flows from financing activities:
Proceeds from stock issuances	1,378	2,980
Excess tax benefit on stock compensation	6	594
Proceeds from short-term debt	0	2,759
Payment of short-term debt	0	(2,561)
Net change in factoring and bank overdrafts	(110)	(441)
Payment of long-term debt	(7,217)	(17,138)
Net cash used in financing activities	(4,943)	(13,807)
Effect of foreign currency rate fluctuations on cash and cash equivalents	(4,471)	(1,544)
Net increase in cash and cash equivalents	19,936	(22,633)
Beginning of period	121,573	118,829	118,829
End of period	141,509	96,196	121,573
As Previously Reported
Cash flows from operating activities:
Net (loss) earnings		(11,733)
Adjustments to reconcile net earnings (loss) to net cash provided by operating activities:
Depreciation and amortization		21,315
Amortization of debt issuance costs		0
Interest on financing liability		0
Deferred taxes		(228)
Stock-based compensation		5,145
Provision for losses on accounts receivable		(638)
Excess tax benefit on stock compensation		(594)
Loss on disposal of fixed assets		343
Litigation settlement		(6,584)
Gain on sale of subsidiary		(248)
Loss on sale of discontinued operations		13,043
Restructuring-related asset impairment		731
Accounts receivable		25,020
Inventories		(12,514)
Other current assets		(3,824)
Accounts payable		(2,604)
Income taxes		(1,950)
Unearned revenues - current		(8,139)
Restructuring reserve		(5,923)
Other liabilities		(14,825)
Net cash provided by (used in) operating activities		(4,207)
Cash flows from investing activities:
Acquisition of property, plant, and equipment and intangibles		(5,955)
Cash proceeds from the sale of discontinued operations		1,502
Cash proceeds from the sale of subsidiary		227
Other investing activities		1,151
Net cash used in investing activities		(3,075)
Cash flows from financing activities:
Proceeds from stock issuances		2,980
Excess tax benefit on stock compensation		594
Proceeds from short-term debt		2,759
Payment of short-term debt		(2,561)
Net change in factoring and bank overdrafts		(441)
Payment of long-term debt		(17,138)
Net cash used in financing activities		(13,807)
Effect of foreign currency rate fluctuations on cash and cash equivalents		(1,544)
Net increase in cash and cash equivalents		(22,633)
Beginning of period		118,829	118,829
Restatement Adjustments
Cash flows from operating activities:
Net (loss) earnings		(2,048)
Adjustments to reconcile net earnings (loss) to net cash provided by operating activities:
Depreciation and amortization		0
Amortization of debt issuance costs		0
Interest on financing liability		1,536
Deferred taxes		(630)
Stock-based compensation		0
Provision for losses on accounts receivable		0
Excess tax benefit on stock compensation		0
Loss on disposal of fixed assets		0
Litigation settlement		0
Gain on sale of subsidiary		0
Loss on sale of discontinued operations		0
Restructuring-related asset impairment		0
Accounts receivable		(4,318)
Inventories		73
Other current assets		(3,088)
Accounts payable		4,930
Income taxes		0
Unearned revenues - current		3,715
Restructuring reserve		0
Other liabilities		(170)
Net cash provided by (used in) operating activities		0
Cash flows from investing activities:
Acquisition of property, plant, and equipment and intangibles		0
Cash proceeds from the sale of discontinued operations		0
Cash proceeds from the sale of subsidiary		0
Other investing activities		0
Net cash used in investing activities		0
Cash flows from financing activities:
Proceeds from stock issuances		0
Excess tax benefit on stock compensation		0
Proceeds from short-term debt		0
Payment of short-term debt		0
Net change in factoring and bank overdrafts		0
Payment of long-term debt		0
Net cash used in financing activities		0
Effect of foreign currency rate fluctuations on cash and cash equivalents		0
Net increase in cash and cash equivalents		0
Beginning of period		$ 0	$ 0