Income Taxes (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 28, 2013	Sep. 28, 2013	Jun. 29, 2013	Mar. 30, 2013	Dec. 29, 2012	Sep. 29, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 28, 2013	Dec. 29, 2012	Dec. 31, 2011
Income (loss) before (provision) benefit for income taxes:
U.S.									$ 13,659	$ (27,290)	$ 26,150
Foreign									4,259	(30,733)	1,933
Income (loss) before (provision) benefit for income taxes	5,221	5,952	3,368	3,377	(64,987)	1,016	2,695	3,253	17,918	(58,023)	28,083
Components of income tax provision (benefit)
Income tax provision (benefit)									6,683	(5,180)	11,138
Tax deficit on stock option exercises and restricted share vesting charged directly to common stock									254	576	639
Total									6,937	(4,604)	11,777
Currently payable:
Federal									1,241	3,637	15,964
Foreign									1,264	50	309
State									254	1,015	3,604
Currently payable									2,759	4,702	19,877
Deferred:
Federal									3,592	(8,163)	(6,829)
Foreign									(238)	21	(286)
State									570	(1,740)	(1,624)
Deferred									3,924	(9,882)	(8,739)
Provision (benefit) for income taxes									$ 6,683	$ (5,180)	$ 11,138
Reconciliation of tax rates with federal statutory rate
Federal statutory rate (as a percent)									35.00%	(35.00%)	35.00%
State income taxes, net of federal income tax benefit (as a percent)									4.40%	(1.30%)	7.00%
Goodwill impairment (as a percent)									0.00%	20.60%	0.00%
Foreign losses benefited (as a percent)									(2.80%)	(0.10%)	(3.00%)
Losses not benefited (as a percent)									0.30%	4.20%	0.00%
Foreign rate differential (as a percent)									(0.40%)	2.10%	0.90%
Foreign tax credit (as a percent)									(0.10%)	(0.50%)	(1.40%)
Uncertain tax positions (as a percent)									(2.10%)	0.00%	0.00%
Impact of NeuCo's tax provision charges (as a percent)									1.50%	0.10%	1.20%
Permanently disallowed expenses (as a percent)									1.60%	1.00%	1.50%
Other (as a percent)									(0.10%)	0.00%	(1.50%)
Effective tax rate (as a percent)									37.30%	(8.90%)	39.70%