Compensation Plans - Schedule of Employee Stock Options and SSARs Activity (Details) (Stock Options and SSARs, USD $)	12 Months Ended
	Dec. 31, 2014
Stock Options and SSARs
Shares
Outstanding at beginning of period (in shares)	463,969
Granted (in shares)	0
Exercised (in shares)	(55,500)
Forfeited (in shares)	(6,888)
Outstanding at end of period (in shares)	401,581
Exercisable (in shares)	383,581
Weighted Average Exercise Price
Outstanding at beginning of period (usd per share)	$ 18.73
Granted (usd per share)	$ 0.00
Exercised (usd per share)	$ 14.64
Forfeited (usd per share)	$ 22.00
Outstanding at end of period (usd per share)	$ 19.24
Exercisable (usd per share)	$ 19.66
Additional Disclosures
Outstanding, weighted average remaining contractual term	3 years 8 months 12 days
Exercisable, weighted average remaining contractual term	3 years 7 months 6 days
Outstanding, aggregate intrinsic value	$ 192
Exercisable, aggregate intrinsic value	$ 27