Earnings per Common Share (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Earning Per Share [Line Items]
Net income (loss)	$ 8,445	$ 960	$ (185,249)	$ (190,949)
Common shares outstanding, basic and diluted:
Common stock basic and diluted		30,493,981	0	30,479,054
Common Class A [Member]
Common shares outstanding, basic and diluted:
Common stock basic and diluted			108,691,107	0
Weighted average shares outstanding, basic and diluted (in shares)	322,529,046	0	108,691,107	0
Class A common stock diluted:	322,529,765	0	108,691,107	0
Common Class B [Member]
Common shares outstanding, basic and diluted:
Common stock basic and diluted	16,532,116		25,903,529	0
Weighted average shares outstanding, basic and diluted (in shares)	16,532,116	30,493,981	25,903,529	30,479,054
Class A common stock diluted:	16,532,116	30,493,981	25,903,529	30,479,054