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Equity-based Compensation (Details Textual) (USD $)	0 Months Ended		3 Months Ended
Equity-based Compensation (Details Textual) (USD $)	Feb. 12, 2013	Feb. 14, 2012	Mar. 29, 2013 Company's 1991 Employee Stock Option Plan (1991 Plan) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock issued (in shares)	98,000	127,500
Restricted stock issued	$ 20.68	$ 15.04
Vesting period			4 years
Annual vesting percentage			25.00%

Number of shares issued during the period related to Restricted Stock Awards, net of any shares forfeited.

Value of stock related to Restricted Stock Awards issued during the period, net of the stock value of such awards forfeited.