Share-Based Compensation (Details) (USD $)	3 Months Ended
	Mar. 31, 2013
Share-Based Compensation [Abstract]
Options maximum term period	10 years
Shares [Roll Forward]
Options outstanding, beginning of period (in shares)	156,960
Granted (in shares)	0
Exercised (in shares)	0
Canceled or expired (in shares)	(2,500)
Options outstanding, end of period (in shares)	154,460
Options exercisable, end of period (in shares)	154,460
Weighted Average Exercise Price [Roll Forward]
Options outstanding, beginning of period (in dollars per share)	$ 21.63
Granted (in dollars per share)	$ 0
Exercised (in dollars per share)	$ 0
Canceled or expired (in dollars per share)	$ 21.94
Options outstanding, end of period (in dollars per share)	$ 21.63
Options exercisable, end of period (in dollars per share)	$ 21.63
Weighted Average Remaining Contractual Life (in years) [Abstract]
Options outstanding, end of period	3 years 2 months 16 days
Options exercisable, end of period	3 years 2 months 16 days
Aggregate Intrinsic Value [Abstract]
Options outstanding, end of period	$ 0
Options exercisable, end of period	0
Unrecognized compensation expense related to nonvested options	$ 0