Employee Stock Benefit Plans (Stock Appreciation Right Activity) (Details) (Stock Appreciation Rights (SARs), USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Stock Appreciation Rights (SARs)
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Outstanding [Roll Forward]
Outstanding balance at beginning of period	6,750
Granted	244,229	3,000
Outstanding balance at end of period	250,979	6,750
Exercisable balance at end of period	2,938
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Outstanding, Weighted Average Exercise Price [Roll Forward]
Outstanding, weighted-average exercise price, balance at beginning of period (in USD per share)	$ 14.37
Granted, weighted-average exercise price (in USD per share)	$ 21.26
Outstanding, weighted-average exercise price, balance at end of period (in USD per share)	$ 21.07	$ 14.37
Exercisable balance at end of period, weighted-average exercise price (in USD per share)	$ 14.03
Outstanding, weighted-average remaining contractual life	10 years
Outstanding, aggregate intrinsic value	$ 0
Exercisable, aggregate intrinsic value	$ 20