Share-Based Payments and Other Executive Compensation - Restricted Stock and Stock Units Activity (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Restricted Stock and Stock Units
Restricted stock granted (in shares)	585,036
Restricted stock expired/forfeited/cancelled (in shares)	(114,750)
Weighted Average Grant Date Fair Value
Granted (in dollars per share)	$ 8.75	$ 7.98	$ 11.63
Outstanding at the end of year(in dollars per share)	$ 8.75
Restricted Stock and RSU Granted [Member]
Restricted Stock and Stock Units
Outstanding at beginning of year	230,095
Restricted stock granted (in shares)	95,242
Restricted stock converted/exercised (in shares)	(56,911)
Restricted stock expired/forfeited/cancelled (in shares)	(147,838)
Outstanding at end of year	120,588
Weighted Average Grant Date Fair Value
Outstanding at the beginning of year(in dollars per share)	$ 15.38
Granted (in dollars per share)	$ 21.85
Converted/Exercised (in dollars per share)	$ 11.29
Expired/Forfeited/Cancelled (in dollars per share)	$ 16.88
Outstanding at the end of year(in dollars per share)	$ 19.68