Quarterly Financial Information (Consolidated Financial Information) (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended						4 Months Ended		12 Months Ended
	Sep. 03, 2013	Jun. 11, 2013	Mar. 19, 2013	Sep. 04, 2012	Jun. 12, 2012	Mar. 20, 2012	Dec. 31, 2013	Dec. 25, 2012	Dec. 31, 2013		Dec. 25, 2012		Dec. 27, 2011
Quarterly Financial Information [Abstract]
Revenues	$ 54,183	$ 60,359	$ 59,802	$ 47,887	$ 50,736	$ 52,943	$ 97,462	$ 80,869	$ 271,806		$ 232,435		$ 198,625
Operating income	(759)	6,935	4,904	(923)	6,611	8,253	6,811	10,680	17,891		24,621		23,270
Income from continuing operations	(380)	4,431	3,569	(1,794)	3,628	4,899	4,592	7,840	12,212		14,573		9,647
Net income	$ (380)	$ 4,431	$ 3,569	$ (2,422)	$ 3,626	$ 4,986	$ 4,592	$ 7,564	$ 12,212		$ 13,754		$ 8,973
Basic income (loss) per common share:
Continuing operations	$ (0.02)	$ 0.19	$ 0.15	$ (0.09)	$ 0.20	$ 0.27	$ 0.19	$ 0.33	$ 0.51		$ 0.71		$ 0.54
Discontinued operations				$ (0.03)		$ 0.01		$ (0.01)			$ (0.04)		$ (0.04)
Basic income per share	$ (0.02)	$ 0.19	$ 0.15	$ (0.12)	$ 0.20	$ 0.28	$ 0.19	$ 0.32	$ 0.51		$ 0.67		$ 0.50
Basic weighted average shares outstanding	23,801,000	23,795,000	23,795,000	20,826,000	17,995,000	17,995,000	23,744,000	23,795,000	23,779,782	[1]	20,432,579	[1]	17,994,667	[1]
Diluted income (loss) per common share:
Continuing operations	$ (0.02)	$ 0.19	$ 0.15	$ (0.09)	$ 0.20	$ 0.27	$ 0.19	$ 0.33	$ 0.51		$ 0.71		$ 0.54
Discontinued operations				$ (0.03)		$ 0.01		$ (0.01)			$ (0.04)		$ (0.04)
Diluted income per share	$ (0.02)	$ 0.19	$ 0.15	$ (0.12)	$ 0.20	$ 0.28	$ 0.19	$ 0.32	$ 0.51		$ 0.67		$ 0.50
Diluted weighted average shares outstanding	23,937,000	23,827,000	23,795,000	20,826,000	17,995,000	17,995,000	23,859,000	23,795,000	23,852,200		20,432,579		17,994,667

[1] The weighted average number of shares of common stock outstanding reflects the effect of the Conversion. (See Note 1).