Stock Based Compensation (Details) (USD $)	9 Months Ended
	Sep. 30, 2012
Board of Director's Stock Compensation [Abstract]
Service period for comparable group used to determine share based payment awards	12 months
Number of treasury shares reissued to fund stock component of director compensation (in shares)	10,238
Distribution of shares of treasury stock for directors compensation value stock comp	$ 156,863
Restricted Stock Activity Weighted-Average Grant Date Fair Value [Abstract]
Unrecognized compensation cost related to nonvested shares	$ 262,866
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)	2,095
Vested (in shares)	(824)
Forfeited or Cancelled (in shares)	0
Nonvested Ending Balance (in shares)	13,729
Restricted Stock Activity Weighted-Average Grant Date Fair Value [Abstract]
Nonvested beginning balance (in dollars per share)	$ 22.33
Granted (in dollars per share)	$ 23.87
Vested (in dollars per share)	$ 22.59
Forfeited or Cancelled (in dollars per share)	$ 0
Nonvested Ending Balance (in dollars per share)	$ 22.55
Period for recognition of unrecognized compensation cost related to nonvested shares	3 years 11 months 19 days