Common Stock (Antidilutive Shares and Options) (Details)	12 Months Ended
	Dec. 31, 2012		Dec. 31, 2011		Dec. 31, 2010
Restricted Stock
Common Stock [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	45,178		81,653		75,270
Performance Shares
Common Stock [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	57,625	[1]	0	[1]	24,225	[1]
Performance shares payout based upon performance	0		0		0
Performance Shares Payout Level	100.00%		100.00%		100.00%
Stock Options
Common Stock [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	0		0		0

[1] Performance shares were excluded from the computation of diluted earnings per share as no payouts would have been required based upon performance at the end of each corresponding period. These amounts assume a 100% performance level payout