Segment Adjusted EBITDA to Net Income (Detail) (USD $)	3 Months Ended			9 Months Ended		3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2013 RMCO	Sep. 30, 2012 RMCO	Sep. 30, 2013 RMCO	Sep. 30, 2012 RMCO	Sep. 30, 2013 RMCO Intersegment Eliminations	Sep. 30, 2012 RMCO Intersegment Eliminations	Sep. 30, 2013 RMCO Intersegment Eliminations	Sep. 30, 2012 RMCO Intersegment Eliminations	Sep. 30, 2013 RMCO Chairman Executive Intersegment Eliminations	Sep. 30, 2012 RMCO Chairman Executive Intersegment Eliminations	Sep. 30, 2013 RMCO Chairman Executive Intersegment Eliminations	Sep. 30, 2012 RMCO Chairman Executive Intersegment Eliminations
Segment Reporting Revenue Reconciling Item [Line Items]
Segment Adjusted EBITDA						$ 22,075,000	$ 19,485,000	$ 58,775,000	$ 48,890,000
Depreciation and amortization		3,656,000	2,788,000	11,088,000	9,231,000	3,656,000	2,788,000	11,088,000	9,231,000
Interest expense, net						5,046,000	2,835,000	11,829,000	8,567,000
Loss on early extinguishment of debt		1,664,000		1,798,000	136,000	1,664,000		1,798,000	136,000
Equity-based compensation				701,000				701,000
Non-cash straight-line rent expense						261,000	270,000	970,000	1,223,000
Gain on sale of assets and sublease						(164,000)	(144,000)	(411,000)	(442,000)
Chairman executive compensation										750,000	750,000	2,250,000	2,250,000
Acquisition integration costs						27,000		249,000
IPO expenses						2,436,000		5,916,000
Income before income taxes		8,399,000	12,986,000	24,385,000	27,925,000	8,399,000	12,986,000	24,385,000	27,925,000
Provision for income taxes		702,000	636,000	1,733,000	1,740,000	702,000	636,000	1,733,000	1,740,000
Net income				$ 22,652,000	$ 26,185,000	$ 7,697,000	$ 12,350,000	$ 22,652,000	$ 26,185,000