Capital Stock (Detail Textuals) (USD $)	0 Months Ended		9 Months Ended		11 Months Ended		0 Months Ended		0 Months Ended	1 Months Ended	11 Months Ended			0 Months Ended	1 Months Ended	11 Months Ended
	Apr. 16, 2013	Mar. 13, 2013	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013	Jul. 12, 2013	Apr. 16, 2013 2014 Senior Notes [Member]	Jul. 12, 2013 2014 Senior Notes [Member]	Apr. 16, 2013 Class A common stock [Member]	Mar. 14, 2013 Class A common stock [Member]	Dec. 31, 2013 Class A common stock [Member]	Jul. 12, 2013 Class A common stock [Member]	Mar. 13, 2013 Class A common stock [Member]	Mar. 15, 2013 Series A Preferred Stock [Member]	Mar. 14, 2013 Series A Preferred Stock [Member]	Dec. 31, 2013 Series A Preferred Stock [Member]
Class of Stock [Line Items]
Senior Notes exchanged for stock, value of senior note exchanged							$ 138,853,000
Shares of Class A common stock issued in exchange of debt									9,549,721		13,679,000
Cash payment for additional exchange consideration, accrued interest and in lieu of fractional shares	4,860,000
Aggregate principal amount of Senior Notes put to the company								60,033,000
Number of shares received by the note holder upon a put												4,128,806
Cash payments for interest payable and in lieu of fractional shares for put transaction						1,088,000
Conversion of stock, shares converted										362,990					109,768
Stock redeemed during period, Shares														101,270		101,000
Stock redeemed during period, Value					5,063,000									5,100,000		5,063,000
Shares received upon settlement of equity call hedge													765,134
Value per share of Class A common stock received upon settlement of equity call hedge													$ 16.82
Class A common stock received upon settlement of equity call hedge													12,868,000
Proceeds from equity call hedge related to Series A preferred stock issuance		$ 10,231,000	$ 0	$ 10,231,000