Compensation Plans-Stock Option Activity (Details) (Stock options and stock-settled stock appreciation rights [Member], USD $)	12 Months Ended
	Dec. 31, 2013
Stock options and stock-settled stock appreciation rights [Member]
Shares
Outstanding at beginning of period	651,841
Granted	0
Exercised	(163,748)
Forfeited	(24,124)
Outstanding at end of period	463,969
Weighted Average Exercise Price
Outstanding at beginning of period (usd per share)	$ 17.30
Granted (usd per share)	$ 0.00
Exercised (usd per share)	$ 13.15
Forfeited (usd per share)	$ 17.89
Outstanding at end of period (usd per share)	$ 18.73
Additional Disclosures
Exercisable	426,469
Exercisable (usd per share)	$ 19.47
Outstanding, Weighted Average Remaining Contractual Term	4 years 7 months 6 days
Exercisable, Weighted Average Remaining Contractual Term	4 years 6 months
Outstanding, Intrinsic Value	$ 782
Exercisable, Intrinsic Value	$ 405