Equity-Based Compensation (Details 2) (USD $)	6 Months Ended
	Jun. 30, 2013	Jul. 01, 2012
Summary of the status of stock options
Outstanding, Options at beginning of year	447,250	728,050
Outstanding, Weighted - Average Exercise Price at beginning of year	$ 10.87	$ 10.24
Exercised, Options	(227,750)	(154,750)
Exercised, Weighted - Average Exercise Price	$ 9.83	$ 8.71
Expired, Options	(37,300)	(11,000)
Expired, Weighted - Average Exercise Price	$ 8.94	$ 16.22
Forfeited, Options	(1,000)	(10,150)
Forfeited, Weighted - Average Exercise Price	$ 9.78	$ 9.41
Outstanding, Options at end of period	181,200	552,150
Outstanding, Weighted - Average Exercise Price at end of period	$ 12.59	$ 10.57
Exercisable, Options at end of period	181,200	552,150
Exercisable, Weighted - Average Exercise Price at end of period	$ 12.59	$ 10.57