Stock Compensation - Options outstanding and exercisable (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Outstanding (in shares)	1,574,572	1,919,021	1,997,778
Exercise price range, minimum (in dollars per share)	$ 9.00	$ 8.00	$ 8.00
Exercise price range, maximum (in dollars per share)	$ 18.62	$ 18.62	$ 18.62
Exercisable (in shares)	1,057,694	1,355,112	1,429,040
Weighted average exercise price (in dollars per share)	$ 11.48	$ 11.63	$ 11.75