Consolidated Statements of Changes in Shareholders' Deficit (USD $) In Thousands, except Share data, unless otherwise specified	Total USD ($)	Preferred Stock [Member] USD ($)	Common Stock [Member] USD ($)	Capital in excess of par value [Member] USD ($)	Accumulated deficit [Member] USD ($)	Accumulated other comprehensive income [Member] USD ($)	Non-controlling interest [Member] USD ($)	Convertible Preferred Stock [Member] USD ($)	Convertible Preferred Stock [Member] Preferred Stock [Member]	Convertible Preferred Stock [Member] Common Stock [Member] USD ($)	Convertible Preferred Stock [Member] Capital in excess of par value [Member] USD ($)	Convertible Debt [Member] USD ($)	Convertible Debt [Member] Common Stock [Member] USD ($)	Convertible Debt [Member] Capital in excess of par value [Member] USD ($)
Balance at Dec. 28, 2012	$ (49,544)	$ 0	$ 994	$ 235,162	$ (312,484)	$ 20,703	$ 6,081
Balance (in shares) at Dec. 28, 2012		0	7,947,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Rounding impact of 10-1 reverse stock split	0		1	(1)
Issuance of series A preferred stock (in shares)		1,000
Issuance of series A preferred stock	15,053			15,053
Additional commitment from forbearance agreement	5,793			5,793
Restricted stock cancellations (in shares)			(4,000)
Restricted stock cancellations	0			0
Share-based compensation	1,809			1,809
Adjustments to defined benefit plans	(43)					(43)
Warrants exercised in connection with credit facility (in shares)			13,000
Unrealized holding losses on securities	(5)					(5)
Net loss	(27,023)				(27,134)		111
Currency translation adjustments	402					402
Balance at Dec. 27, 2013	(53,558)	0	995	257,816	(339,618)	21,057	6,192
Balance (in shares) at Dec. 27, 2013		1,000	7,956,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Restricted stock grants, net of shares withheld for employee taxes (in shares)			256,000
Restricted stock grants, net of shares withheld for employee taxes	(299)			(299)
Share-based compensation	2,479			2,479
Adjustments to defined benefit plans	(1,205)					(1,205)
Conversion into common stock (in shares)									(1,000)	8,155,000			1,107,000
Conversion into common stock								(38)		1,019	(1,057)	3,477	138	3,339
Net loss	(32,858)				(32,856)		(2)
Currency translation adjustments	717					717
Balance at Dec. 26, 2014	$ (81,285)	$ 0	$ 2,152	$ 262,278	$ (372,474)	$ 20,569	$ 6,190
Balance (in shares) at Dec. 26, 2014		0	17,474,000