Certain Relationships and Related Transactions (Details) (USD $)	12 Months Ended
	Dec. 31, 2012 Emmett Wood [Member]	Dec. 31, 2011 Emmett Wood [Member]	Dec. 31, 2010 Emmett Wood [Member]	Dec. 31, 2012 Emmett Wood [Member] Class A Common Stock [Member]	Dec. 31, 2011 Emmett Wood [Member] Class A Common Stock [Member]	Dec. 31, 2012 Emmett Wood [Member] Class B Common Stock [Member]	Dec. 31, 2011 Emmett Wood [Member] Class B Common Stock [Member]	Aug. 24, 2012 Porter And Toxford [Member] Class A Common Stock [Member]	May 16, 2012 Porter And Toxford [Member] Class A Common Stock [Member]	Apr. 08, 2011 Porter And Toxford [Member] Class A Common Stock [Member]	Aug. 24, 2012 Porter And Toxford [Member] Series A-1 Preferred Stock [Member]	Apr. 08, 2011 Porter And Toxford [Member] Series A-1 Preferred Stock [Member]	Aug. 24, 2012 Porter And Toxford [Member] Series A-2 Preferred Stock [Member]	Apr. 08, 2011 Porter And Toxford [Member] Series A-2 Preferred Stock [Member]	Aug. 24, 2012 Porter And Toxford [Member] Senior Redeemable Preferred Stock [Member]	May 16, 2012 Porter And Toxford [Member] Senior Redeemable Preferred Stock [Member]	Apr. 08, 2011 Porter And Toxford [Member] Senior Redeemable Preferred Stock [Member]
Related Party Transaction [Line Items]
Compensation to related parties	$ 386,000	$ 320,000	$ 298,000
Number of shares held by related party (in shares)				250,000	250,000	50,000	50,000
Number of Senior Redeemable Preferred Stock redeemed by the Company (in shares)											405	220	567	307	1,175		637
Common stock held by related parties (in hundredths)								44.00%	44.00%	44.00%
Related party preferred stock held after redemption (in shares)											359	763	502	1,069
Percentage of redeemable preferred stock held by related party after redemption (in hundredths)															82.70%	82.70%	82.70%