Restatement of Consolidated Financial Statements - Condensed Consolidated Balance Sheets (Details 2) - $ / shares	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Mar. 25, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Treasury stock, shares		1,000,000
Common Stock Class A Non-voting [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01	$ 0.01		$ 0.01	$ 0.01	$ 0.01	$ 0.01	$ 0.01	$ 0.01
Common Stock, shares authorized	100,000,000	100,000,000	100,000,000	100,000,000	56,000,000	55,550,000	54,000,000	54,000,000	56,000,000	56,000,000
Common Stock, shares issued	50,614,767	50,612,246	51,411,973		51,389,307	51,269,434	51,230,843	51,208,328	51,196,870	48,255,536
Common Stock, shares outstanding	50,614,767	50,612,246	51,411,973		51,389,307	51,269,434	51,230,843	51,208,328	51,196,870	48,255,536
Common Stock Class B Voting [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01	$ 0.01		$ 0.01	$ 0.01	$ 0.01	$ 0.01	$ 0.01	$ 0.01
Common Stock, shares authorized	3,000,000	3,000,000	3,000,000		3,000,000	3,000,000	3,000,000	3,000,000	3,000,000	3,000,000
Common Stock, shares issued	2,970,171	2,970,171	2,970,171		2,970,171	2,970,171	2,970,171	2,970,171	2,970,171	2,970,171
Common Stock, shares outstanding	2,970,171	2,970,171	2,970,171		2,970,171	2,970,171	2,970,171	2,970,171	2,970,171	2,970,171
As Previously Reported [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Treasury stock, shares		1,000,000
As Previously Reported [Member] | Common Stock Class A Non-voting [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01	$ 0.01		$ 0.01	$ 0.01	$ 0.01	$ 0.01	$ 0.01	$ 0.01
Common Stock, shares authorized	100,000,000	100,000,000	100,000,000		56,000,000	55,550,000	54,000,000	54,000,000	56,000,000	56,000,000
Common Stock, shares issued	50,614,767	51,612,246	51,411,973		51,389,307	51,269,434	51,230,843	51,208,328	51,196,870	48,255,536
Common Stock, shares outstanding	50,614,767	51,612,246	51,411,973		51,389,307	51,269,434	51,230,843	51,208,328	51,196,870	48,255,536
As Previously Reported [Member] | Common Stock Class B Voting [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01	$ 0.01		$ 0.01	$ 0.01	$ 0.01	$ 0.01	$ 0.01	$ 0.01
Common Stock, shares authorized	3,000,000	3,000,000	3,000,000		3,000,000	3,000,000	3,000,000	3,000,000	3,000,000	3,000,000
Common Stock, shares issued	2,970,171	2,970,171	2,970,171		2,970,171	2,970,171	2,970,171	2,970,171	2,970,171	2,970,171
Common Stock, shares outstanding	2,970,171	2,970,171	2,970,171		2,970,171	2,970,171	2,970,171	2,970,171	2,970,171	2,970,171