Stock Compensation Plans (Details 5) - $ / shares	12 Months Ended
	Dec. 31, 2016	Dec. 26, 2015	Dec. 27, 2014
Schedule of Nonvested Shares Activity [Line Items]
Number of Options, Granted	20,000	0	25,000
Weighted Average Grant Date Fair Value, Granted	$ 14.39	$ 0	$ 11.86
Nonvested Stock Option Plan [Member]
Schedule of Nonvested Shares Activity [Line Items]
Number of Options, Outstanding at beginning of year	54,375
Number of Options, Granted	20,000
Number of Options, Vested	(38,875)
Number of Options, Forfeited	(4,250)
Number of Options, Outstanding at end of year	31,250	54,375
Weighted Average Grant Date Fair Value, Outstanding at beginning of year	$ 2.6
Weighted Average Grant Date Fair Value, Granted	2.52
Weighted Average Grant Date Fair Value, Vested	2.76
Weighted Average Grant Date Fair Value, Forfeited	2.21
Weighted Average Grant Date Fair Value, Outstanding at end of year	$ 2.41	$ 2.6