Share-Based Payments and Other Executive Compensation (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended			9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Dec. 31, 2010	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Dec. 31, 2011	Sep. 30, 2011
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock, par value per share (in dollars per share)	$ 1			$ 1			$ 1
Increase (decrease) in authorized shares under incentive plan (in shares)				700,000
Shares authorized under the plan (in shares)	2,200,000		1,500,000	2,200,000
Expiration period after grant issued				10 years
Shares available for grant (in shares)	562,022			562,022
Share-based compensation cost	$ 268	$ 921		$ 1,113	$ 1,509
Restricted stock (in shares)	17,675		180,000		552,660
Weighted average grant date fair value (in dollars per share)						$ 12.73		$ 11.63
Reversal of share based compensation expense					450
Forfeited in Period (in shares)					293,178
Unrecognized compensation expense	$ 4,066			$ 4,066
Weighted average expense recognition period (in years)				13 months 29 days
Stock options, restricted stock and RSU granted [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares available for grant (in shares)	635,942			635,942		635,942
Common Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares available for grant (in shares)	1,197,964			1,197,964		1,197,964