Stock-Based Compensation (Tables)

12 Months Ended

Dec. 31, 2012

Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]



	2012			2011			2010
Weighted average fair value of grants	$	2.03		$	1.89		$	2.16
Risk-free interest rate		2.03	%		2.19	%		2.29	%
Dividend yield		1.24	%		1.32	%		1.41	%
Expected volatility		22.04	%		22.25	%		28.60	%
Expected life in months		68			65			62

Disclosure of Share-based Compensation Arrangements by Share-based Payment Award [Table Text Block]



	Shares			Weighted- Average Exercise Price		Weighted- Average Remaining Contractual Term (In Years)		Aggregate Intrinsic Value
Outstanding at December 31, 2011		171,378		$	10.01
Granted		27,784			9.64
Exercised		(15,588	)		8.98
Forfeited/cancelled/expired		—
Outstanding at December 31, 2012		183,574		$	9.92		6.04	$	360,678
Exercisable at December 31, 2012		117,111		$	10.42		4.78	$	189,187

Schedule of Activity and Changes Under the Principal Option Plan [Table Text Block]



Stock Option Plan	Shares			Exercise Price Range per Share
Outstanding, December 31, 2009 (124,271 shares exercisable)		192,002			$7.67 to $15.73
Granted during 2010		38,203		$	8.53
Exercised during 2010		—		$	0.00
Expired or canceled during 2010		(31,259	)		$7.67 to $15.73
Outstanding, December 31, 2010 (138,898) shares exercisable)		198,946			$7.67 to $15.73
Granted during 2011		27,784		$	9.11
Exercised during 2011		(42,495	)	$	7.71
Expired or canceled during 2011		(12,857	)	$	10.50 to $15.73
Outstanding, December 31, 2011 (105,388) shares exercisable)		171,378			$7.67 to $15.73
Granted during 2012		27,784		$	9.64
Exercised during 2012		(15,588	)		$7.67 to $10.50
Expired or canceled during 2012		—		$	0.00
Outstanding, December 31, 2012 (117,111) shares exercisable)		183,574			$7.67 to $15.73

- Definition

Tabular disclosure of components of a stock option or other award plan under which equity-based compensation is awarded to employees, typically comprised of the amount of unearned compensation (deferred compensation cost), compensation expense, and changes in the quantity and fair value of the shares (or other type of equity) granted, exercised, forfeited, and issued and outstanding pertaining to that plan. Disclosure may also include nature and general terms of such arrangements that existed during the period and potential effects of those arrangements on shareholders, effect of compensation cost arising from equity-based payment arrangements on the income statement, method of estimating the fair value of the goods or services received, or the fair value of the equity instruments granted, during the period, cash flow effects resulting from equity-based payment arrangements and, for registrants that accelerate vesting of out of the money share options, reasons for the decision to accelerate.

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