Common Stock (Antidilutive Shares) (Details) - shares	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Restricted Stock
Common Stock [Line Items]
Antidilutive Securities Excluded from Computation of Diluted Earnings Per Share, Amount	56,375	60,455	51,489
Performance Shares
Common Stock [Line Items]
Performance Shares Payout Level	100.00%	100.00%	100.00%
Antidilutive Securities Excluded from Computation of Diluted Earnings Per Share, Amount	66,804	96,208	115,044	[1]
Performance shares payout based upon performance	0	0	0

[1] Certain 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.