Acquisition Revenue and Earnings of Combined Entity Reverse Acquisition (Detail) (USD $)	2 Months Ended	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Business Combinations [Abstract]
Revenues	$ 454,759	$ 24,999,546	$ 12,313,769	$ 67,135,452	$ 35,531,092
Loss from Continuing Operations	(21,698,335)	(20,859,729)	1,541,425	(21,122,458)	4,938,407
Net income (loss)	(22,026,176)	(14,088,832)	1,541,425	(14,351,561)	4,938,407
Net Income (Loss) Attrib to Graymark	(22,026,176)	(16,491,364)	1,157,168	(15,874,006)	4,486,250
Net Income (Loss) Attrib to Graymark per Share		$ (0.10)	$ 0.01	$ (0.10)	$ 0.03
Supplemental Pro Forma, Revenues				72,637,964	48,496,884
Supplemental Pro Forma, Loss from Continuing Operations				(4,895,543)	(25,106,231)
Supplemental Pro Forma, Net Income (Loss)				1,868,402	(25,470,403)
Supplemental Pro Forma, Net Income (Loss) Attrib to Graymark				165,138	(25,784,049)
Supplemental Pro Forma, Net Income (Loss) Attrib to Graymark per Share				$ 0.00	$ (0.16)