Stock Based Compensation (Details) (USD $)	6 Months Ended
	Jun. 30, 2012
Board of Director's Stock Compensation [Abstract]
Service period for comparable group used to determine share based payment awards	12 months
Distribution Of Shares Of Treasury Stock For Directors Compensation Value Stock Comp	$ 107,000
Number of treasury shares reissued to fund stock component of director compensation (in shares)	10,238
Restricted Stock Activity Weighted-Average Grant Date Fair Value [Abstract]
Unrecognized compensation cost related to nonvested shares	$ 254,191
Restricted Stock [Member]
Restricted Stock Plan [Abstract]
Number of shares authorized under restricted stock plan (in shares)	10,000
Vesting period for stock award granted	5 years
Restricted Stock Activity Shares [Abstract]
Nonvested Beginning Balance (in shares)	12,458
Granted (in shares)	1,079
Vested (in shares)	(624)
Forfeited or Cancelled (in shares)	0
Nonvested Ending Balance (in shares)	12,913
Restricted Stock Activity Weighted-Average Grant Date Fair Value [Abstract]
Nonvested beginning balance (in dollars per share)	$ 22.33
Granted (in dollars per share)	$ 23.18
Vested (in dollars per share)	$ 22.47
Forfeited or Cancelled (in dollars per share)	$ 0
Nonvested Ending Balance (in dollars per share)	$ 22.40
Period for recognition of unrecognized compensation cost related to nonvested shares	4 years 1 month 13 days