Statements of Shareholders' Equity (Predecessor) (Predecessor, USD $) In Thousands, unless otherwise specified	Predecessor USD ($)	Predecessor Additional Paid-in Capital USD ($)	Predecessor Accumulated income (deficit) USD ($)	Predecessor Accumulated Other Comprehensive Income (Loss) USD ($)	Predecessor Common Class A Common Stock USD ($)	Predecessor Common Class B Common Stock USD ($)
Balances, beginning of period at Dec. 31, 2011	$ 840,729	$ 350,158	$ 495,549	$ (5,517)	$ 521	$ 18
Increase (Decrease) in Shareholders' Equity
Stock options and restricted stock issued	3,687	3,684	0	0	3	0
Stock-based compensation expense	9,819	9,819	0	0	0	0
Income tax effect of stock option exercises	1,049	1,049	0	0	0	0
Dividends ($0.32 per share)	(17,549)	0	(17,549)	0	0	0
Net income (loss)	171,539	0	171,539	0	0	0
Amortization of accumulated other comprehensive loss related to de-designated hedges, net of income taxes	5,517	0	0	5,517	0	0
Balances, end of period at Dec. 31, 2012	1,014,791	364,710	649,539	0	524	18
Increase (Decrease) in Shareholders' Equity
Net income (loss)	32,434
Balances, end of period at Mar. 31, 2013
Balances, beginning of period at Dec. 31, 2012	1,014,791	364,710	649,539	0	524	18
Increase (Decrease) in Shareholders' Equity
Stock options and restricted stock issued	730	727	0	0	3	0
Stock-based compensation expense	12,576	12,576	0	0	0	0
Income tax effect of stock option exercises	2,345	2,345	0	0	0	0
Dividends ($0.32 per share)	(17,612)	0	(17,612)	0	0	0
Net income (loss)	93,447	0	93,447	0	0	0
Amortization of accumulated other comprehensive loss related to de-designated hedges, net of income taxes	0
Balances, end of period at Dec. 16, 2013	1,106,277	380,358	725,374	0	527	18
Balances, beginning of period at Sep. 30, 2013
Increase (Decrease) in Shareholders' Equity
Net income (loss)	(28,529)
Balances, end of period at Dec. 16, 2013	$ 1,106,277