Condensed Consolidated Statement of Shareholders' Equity - 6 months ended Jun. 25, 2017 - USD ($) $ in Thousands	Total	Common Stock	Unrecognized Gains (Losses) on Derivative Instruments	Pension Obligations	Cumulative Translation Adjustment	Retained Earnings	Non-controlling Interest
Net (loss) income attributable to Superior	$ (4,170)					$ (4,170)
Beginning of the period (in shares) at Dec. 25, 2016	25,143,950,000	25,143,950
Beginning of period at Dec. 25, 2016	$ 398,226	$ 89,916	$ (16,101)	$ (3,636)	$ (105,188)	433,235	$ 0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	(4,417)						(247)
Change in unrecognized gains (losses) on derivative instruments, net of tax	27,627		27,627
Change in employee benefit plans, net of taxes	136			136
Foreign currency translation gain (loss), net of tax	$ 23,345				23,345
Stock options exercised (in shares)	0	0
Stock options exercised	$ 0	$ 0
Restricted stock awards granted, net of forfeitures (in shares)		33,692
Stock-based compensation expense (in shares)		(55,801)
Stock-based compensation expense	(470)	$ (470)
Common stock repurchased (in shares)		(215,841)
Common stock repurchased	(5,014)	$ (777)				(4,237)
Cash dividends declared ($0.27 per share)	(6,860)					(6,860)
Redeemable preferred dividend	(2,882)					(2,882)
Non-controlling interest	$ 64,144						64,144
End of the period (in shares) at Jun. 25, 2017	24,906,000,000	24,906,000
End of period at Jun. 25, 2017	$ 493,835	$ 88,669	$ 11,526	$ (3,500)	$ (81,843)	$ 415,086	$ 63,897