Stock Plans and Stock Compensation Expense Summary of Stock Options by Exercise Price Range (Details) (USD $)	12 Months Ended
	Dec. 27, 2014
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Options Outstanding	439,235
Options Outstanding, Weighted Average Remaining Contractual Term	1 year 10 months
Options Outstanding, Weighted Average Exercise Price	$ 10.31
Options Exercisable	439,235
Options Exercisable, Weighted Average Remaining Contractual Term	1 year 10 months
Options Exercisable, Weighted Average Exercise Price	$ 10.31
Exercise Price Range One [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Options Outstanding	111,000
Options Outstanding, Weighted Average Remaining Contractual Term	4 years 7 months
Options Outstanding, Weighted Average Exercise Price	$ 4.98
Options Exercisable	111,000
Options Exercisable, Weighted Average Remaining Contractual Term	4 years 7 months
Options Exercisable, Weighted Average Exercise Price	$ 4.98
Exercise Price Range Two [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Options Outstanding	81,935
Options Outstanding, Weighted Average Remaining Contractual Term	0 years 4 months
Options Outstanding, Weighted Average Exercise Price	$ 6.96
Options Exercisable	81,935
Options Exercisable, Weighted Average Remaining Contractual Term	0 years 4 months
Options Exercisable, Weighted Average Exercise Price	$ 6.96
Exercise Price Range Three [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Options Outstanding	246,300
Options Outstanding, Weighted Average Remaining Contractual Term	0 years 11 months
Options Outstanding, Weighted Average Exercise Price	$ 13.82
Options Exercisable	246,300
Options Exercisable, Weighted Average Remaining Contractual Term	0 years 11 months
Options Exercisable, Weighted Average Exercise Price	$ 13.82