Quarterly Information (Quarterly Comparison of Financial Statements as Previously Filed - Statement of Cash Flows) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended		9 Months Ended		12 Months Ended
	Mar. 31, 2013	Mar. 25, 2012	Jun. 30, 2013	Jun. 24, 2012	Sep. 29, 2013	Sep. 23, 2012	Dec. 29, 2013	Dec. 30, 2012	Dec. 25, 2011
Net Cash Provided by (Used in) Operating Activities [Abstract]
Net loss	$ (7,481)	$ (11,388)	$ (20,913)	$ (106,737)	$ (13,781)	$ (112,546)	$ (18,927)	$ (146,979)	$ (83,561)
Depreciation and amortization	6,962	8,313	13,666	15,940	20,094	23,190	26,373	30,369	36,278
Amortization of debt issuance costs	347	267	821	535	1,221	1,994	2,207	2,345	1,070
Interest on financing liability	505	479	1,013	941	1,536	1,404	2,082	1,893	977
Deferred taxes	(393)	(1,028)	(768)	(1,219)	(858)	(1,449)	(3,565)	(2,930)	40,888
Stock-based compensation	1,972	1,867	3,859	2,814	5,145	3,737	6,369	4,753	7,408
Provision for losses on accounts receivable	(699)	1,390	(522)	3,296	(638)	3,400	(435)	3,024	3,765
Excess tax benefit on stock compensation	(23)	73	(122)	(97)	(594)	(97)	(600)	(98)	(634)
Loss (gain) on disposal of fixed assets	170	(68)	375	(295)	343	(1,069)	564	(1,326)	106
Litigation settlement	(6,584)	0	(6,584)		(6,584)		(6,584)	295	943
Asset impairment				672		1,442	4,820	1,771	3,373
Goodwill impairment				64,807		64,807	0	106,348	3,411
Gain on sale of subsidiary			(248)		(248)		(248)	(1,657)	0
Loss on sale of discontinued operations			13,024		13,043		13,598	15	0
Restructuring-related asset impairment	731		731	5,297	731	6,156	1,211	6,506	7,843
Accounts receivable	34,851	44,826	37,308	34,151	20,702	33,065	12,903	26,317	(25,757)
Inventories	(1,254)	(3,091)	(2,529)	7,756	(12,441)	19,981	(948)	37,947	(23,947)
Other assets	6,764	(3,950)	148	(1,198)	(6,912)	633	4,947	7,828	(15,015)
Accounts payable	(2,031)	(20,437)	8,267	(12,117)	2,326	(4,562)	1,954	(2,185)	1,064
Income taxes	(2,462)	(3,594)	(2,329)	(3,325)	(1,950)	(3,319)	(198)	(1,502)	(506)
Unearned revenues - current	(4,679)	(1,201)	(3,840)	(8,653)	(4,424)	(9,635)	(6,244)	(6,923)	9,351
Restructuring reserve	(3,063)	(5,658)	(5,059)	2,125	(5,923)	(1,983)	(1,598)	(8,178)	10,544
Other liabilities	(10,590)	(120)	(19,339)	6,063	(14,995)	(3,806)	(16,611)	4,732	2,326
Net cash provided by operating activities	13,043	6,680	16,959	10,756	(4,207)	21,343	21,070	62,365	(20,073)
Net Cash Provided by (Used in) Investing Activities [Abstract]
Acquisition of property, plant, and equipment and intangibles	(1,363)	(5,365)	(3,310)	(8,383)	(5,955)	(10,415)	(8,946)	(12,401)	(22,981)
Change in restricted cash		25		39		291	0	291	15
Proceeds from sale of real estate						4,560	0	4,560	0
Net cash proceeds from the sale of discontinued operations			1,290		1,502		1,573	1,180	0
Net cash proceeds from the sale of subsidiary			227		227		227	2,250	0
Other investing activities	440	288	921	518	1,151	1,148	1,848	1,671	623
Net cash used in investing activities	(923)	(5,052)	(872)	(7,826)	(3,075)	(4,416)	(5,298)	(2,449)	(98,280)
Net Cash Provided by (Used in) Financing Activities [Abstract]
Proceeds from stock issuances	600	521	1,545	623	2,980	922	4,073	1,653	2,210
Excess tax benefit on stock compensation	23	(73)	122	97	594	97	600	98	634
Proceeds from short-term debt	2,272	2,837	2,759	2,863	2,759	3,451	2,759	3,467	8,565
Payment of short-term debt	(248)	(2,613)	(2,561)	(10,765)	(2,561)	(11,481)	(2,561)	(11,869)	(7,895)
Net change in factoring and bank overdrafts	(431)	(633)	(339)	(1,475)	(441)	(9,121)	(877)	(8,932)	(4,364)
Proceeds from long-term debt		2,000		3,000		3,000	99,098	3,000	74,117
Payment of long-term debt	(71)	(5,321)	(10,113)	(5,380)	(17,138)	(20,439)	(112,664)	(20,498)	(67,370)
Proceeds from financing liability							0	0	31,407
Debt issuance costs						(2,113)	(1,765)	(2,085)	0
Net cash (used in) provided by financing activities	2,145	(3,282)	(8,587)	(11,037)	(13,807)	(35,684)	(11,337)	(35,166)	37,304
Effect of foreign currency rate fluctuations on cash and cash equivalents	(2,015)	1,626	(3,204)	(960)	(1,544)	549	(1,691)	747	1,908
Net increase (decrease) in cash and cash equivalents	12,250	(28)	4,296	(9,067)	(22,633)	(18,208)	2,744	25,497	(79,141)
Cash and cash equivalents	131,079	93,304	123,125	84,265	96,196	75,124	121,573	118,829	93,332
As Previously Reported
Net Cash Provided by (Used in) Operating Activities [Abstract]
Net loss	(6,342)	(11,270)	(19,357)	(105,456)	(11,733)	(110,841)		(146,405)	(66,626)
Depreciation and amortization	7,309	8,580	14,487	16,475	21,315	25,184		32,714	37,348
Amortization of debt issuance costs	0	0	0	0	0	0		0	0
Interest on financing liability	0	0	0	0	0	0		0	0
Deferred taxes	(114)	(434)	(305)	(916)	(228)	(967)		(2,075)	47,612
Stock-based compensation	1,972	1,867	3,859	2,814	5,145	3,737		4,753	7,408
Provision for losses on accounts receivable	(699)	1,390	(522)	3,296	(638)	3,400		3,024	3,765
Excess tax benefit on stock compensation	(23)	73	(122)	(97)	(594)	(97)		(98)	(634)
Loss (gain) on disposal of fixed assets	170	(68)	375	(295)	343	(1,069)		(1,326)	106
Litigation settlement	(6,584)	0	(6,584)		(6,584)			0	0
Asset impairment				672		1,442		1,771	3,373
Goodwill impairment				64,807		64,807		106,348	3,411
Gain on sale of subsidiary			(248)		(248)			(1,657)
Loss on sale of discontinued operations			13,024		13,043			15
Restructuring-related asset impairment	731		731	5,297	731	6,156		6,506	7,843
Accounts receivable	39,180	44,636	41,613	33,961	25,020	32,875		22,105	(25,567)
Inventories	(1,181)	(2,968)	(2,456)	7,357	(12,514)	19,634		37,748	(23,821)
Other assets	10,302	(3,950)	2,690	(1,198)	(3,824)	633		5,357	(14,065)
Accounts payable	(6,973)	(20,437)	3,351	(12,117)	(2,604)	(4,562)		2,631	1,064
Income taxes	(2,462)	(3,594)	(2,329)	(3,325)	(1,950)	(3,319)		(1,502)	(506)
Unearned revenues - current	(8,846)	(1,728)	(7,007)	(9,166)	(8,139)	(10,143)		(4,393)	10,780
Restructuring reserve	(3,063)	(5,658)	(5,059)	2,125	(5,923)	(1,983)		(8,178)	10,544
Other liabilities	(10,334)	89	(19,182)	6,371	(14,825)	(3,696)		4,875	8,350
Net cash provided by operating activities	13,043	6,528	16,959	10,605	(4,207)	21,191		62,213	10,385
Net Cash Provided by (Used in) Investing Activities [Abstract]
Acquisition of property, plant, and equipment and intangibles	(1,363)	(5,365)	(3,310)	(8,383)	(5,955)	(10,415)		(12,401)	(22,981)
Change in restricted cash		25		39		291		291	15
Proceeds from sale of real estate						4,560		4,560
Net cash proceeds from the sale of discontinued operations			1,290		1,502			1,180
Net cash proceeds from the sale of subsidiary			227		227			2,250
Other investing activities	440	288	921	518	1,151	1,148		1,671	623
Net cash used in investing activities	(923)	(5,052)	(872)	(7,826)	(3,075)	(4,416)		(2,449)	(98,280)
Net Cash Provided by (Used in) Financing Activities [Abstract]
Proceeds from stock issuances	600	521	1,545	623	2,980	922		1,653	2,210
Excess tax benefit on stock compensation	23	(73)	122	97	594	97		98	634
Proceeds from short-term debt	2,272	2,837	2,759	2,863	2,759	3,451		3,467	8,565
Payment of short-term debt	(248)	(2,613)	(2,561)	(10,765)	(2,561)	(11,481)		(11,869)	(7,895)
Net change in factoring and bank overdrafts	(431)	(633)	(339)	(1,475)	(441)	(9,121)		(8,932)	(4,364)
Proceeds from long-term debt		2,000		3,000		3,000		3,000	74,117
Payment of long-term debt	(71)	(5,321)	(10,113)	(5,380)	(17,138)	(20,439)		(20,498)	(67,370)
Proceeds from financing liability									0
Debt issuance costs						(2,113)		(2,085)
Net cash (used in) provided by financing activities	2,145	(3,282)	(8,587)	(11,037)	(13,807)	(35,684)		(35,166)	5,897
Effect of foreign currency rate fluctuations on cash and cash equivalents	(2,015)	1,629	(3,204)	(958)	(1,544)	552		750	3,006
Net increase (decrease) in cash and cash equivalents	12,250	(177)	4,296	(9,216)	(22,633)	(18,357)		25,348	(78,992)
Cash and cash equivalents	131,079	93,304	123,125	84,265	96,196	75,124		118,829	93,481
Restatement Adjustments
Net Cash Provided by (Used in) Operating Activities [Abstract]
Net loss	(1,139)	(118)	(1,556)	(1,281)	(2,048)	(1,705)		(574)	(16,935)
Depreciation and amortization	0	0	0	0	0	0		0	0
Amortization of debt issuance costs	0	0	0	0	0	0		0	0
Interest on financing liability	505	479	1,013	941	1,536	1,404		1,893	977
Deferred taxes	(279)	(594)	(463)	(303)	(630)	(482)		(855)	(6,724)
Stock-based compensation	0	0	0	0	0	0		0	0
Provision for losses on accounts receivable	0	0	0	0	0	0		0	0
Excess tax benefit on stock compensation	0	0	0	0	0	0		0	0
Loss (gain) on disposal of fixed assets	0	0	0	0	0	0		0	0
Litigation settlement	0	0	0		0			0	0
Asset impairment				0		0		0	0
Goodwill impairment				0		0		0	0
Gain on sale of subsidiary			0		0			0
Loss on sale of discontinued operations			0		0			0
Restructuring-related asset impairment	0		0	0	0	0		0	0
Accounts receivable	(4,329)	190	(4,305)	190	(4,318)	190		4,212	(190)
Inventories	(73)	(123)	(73)	399	73	347		199	(126)
Other assets	(3,538)	0	(2,542)	0	(3,088)	0		2,471	(950)
Accounts payable	4,942	0	4,916	0	4,930	0		(4,816)	0
Income taxes	0	0	0	0	0	0		0	0
Unearned revenues - current	4,167	527	3,167	513	3,715	508		(2,530)	(1,429)
Restructuring reserve	0	0	0	0	0	0		0	0
Other liabilities	(256)	(209)	(157)	(308)	(170)	(110)		152	(5,081)
Net cash provided by operating activities	0	152	0	151	0	152		152	(30,458)
Net Cash Provided by (Used in) Investing Activities [Abstract]
Acquisition of property, plant, and equipment and intangibles	0	0	0	0	0	0		0	0
Change in restricted cash		0		0		0		0	0
Proceeds from sale of real estate						0		0
Net cash proceeds from the sale of discontinued operations			0		0			0
Net cash proceeds from the sale of subsidiary			0		0			0
Other investing activities	0	0	0	0	0	0		0	0
Net cash used in investing activities	0	0	0	0	0	0		0	0
Net Cash Provided by (Used in) Financing Activities [Abstract]
Proceeds from stock issuances	0	0	0	0	0	0		0	0
Excess tax benefit on stock compensation	0	0	0	0	0	0		0	0
Proceeds from short-term debt	0	0	0	0	0	0		0	0
Payment of short-term debt	0	0	0	0	0	0		0	0
Net change in factoring and bank overdrafts	0	0	0	0	0	0		0	0
Proceeds from long-term debt		0		0		0		0	0
Payment of long-term debt	0	0	0	0	0	0		0	0
Proceeds from financing liability									31,407
Debt issuance costs						0		0
Net cash (used in) provided by financing activities	0	0	0	0	0	0		0	31,407
Effect of foreign currency rate fluctuations on cash and cash equivalents	0	(3)	0	(2)	0	(3)		(3)	(1,098)
Net increase (decrease) in cash and cash equivalents	0	149	0	149	0	149		149	(149)
Cash and cash equivalents	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0		$ 0	$ (149)