Restatement of Condensed Consolidated Financial Statements - Condensed Consolidated Balance Sheets (Details 2) - $ / shares	Dec. 31, 2014	Sep. 30, 2014	Dec. 31, 2013
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
Common stock, shares authorized	100,000,000	100,000,000	56,000,000
Common stock, shares issued	50,680,358	50,614,767	51,389,307
Common stock, shares outstanding	50,680,358	50,614,767	51,389,307
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
Common stock, shares authorized	3,000,000	3,000,000	3,000,000
Common stock, shares issued	2,970,171	2,970,171	2,970,171
Common stock, shares outstanding	2,970,171	2,970,171	2,970,171
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
Common stock, shares authorized	100,000,000
Common stock, shares issued	50,680,358
Common stock, shares outstanding	50,680,358
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
Common stock, shares authorized	3,000,000
Common stock, shares issued	2,970,171
Common stock, shares outstanding	2,970,171