Stock Based Compensation (Tables)

6 Months Ended

Jun. 30, 2012

Share Based Compensation [Abstract]

Schedule of Compensation Cost for Share-based Payment Arrangements, Allocation of Share-based Compensation Costs by Plan [Table Text Block]

	For the Six Months Ended June 30,
	2012		2011
Stock options	$	263	$	228
Nonvested stock awards and restricted stock units		732		671
Employee stock purchase plan		23		23
Non-elective and elective 401(k) matching contribution in stock		1,030		902
Director stock ownership plan		30		30
Total share-based compensation expense	$	2,078	$	1,854

Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block]

					Weighted
					Average
			Weighted Average		Remaining
		Number of	Exercise Price per		Contractual
		Shares	Share		Term (years)
Balance at December 31, 2011		253,342	$	16.43
	Options granted	40,157		38.57
	Options exercised	(77,176)		9.62
	Options forfeited	(8,470)		29.32
Balance at June 30, 2012		207,853	$	22.72		4.5
Exercisable at June 30, 2012		117,758	$	15.85		3.5

Schedule of Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range [Table Text Block]

						Weighted	Weighted		Number	Weighted
					Number	Average	Average		Exercisable	Average
Range of					Outstanding	Contractual	Exercise		at	Exercise
Exercise Prices					at 6/30/2012	Life	Price		6/30/2012	Price
$	4.62	-	$	9.24	47,325	2.6	$	6.93	47,325	$	6.93
$	9.25	-	$	18.48	0	0		0	0		0
$	18.49	-	$	23.11	89,216	4.1		18.86	59,150		18.88
$	23.12	-	$	36.97	0	0		0	0		0
$	36.98	-	$	41.59	69,120	6.1		37.76	11,283		37.37
$	41.60	-	$	46.21	2,192	7.0		46.21	0		0
					207,853	4.5		22.72	117,758		15.85

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

	March, 31
	2012
Dividend Yield	3.09	%
Expected Volatility	69.90	%
Risk-free interest rate	0.61	%
Expected term (years)	4.0

	June 30,
	2012
Dividend Yield	2.69	%
Expected Volatility	69.09	%
Risk-free interest rate	0.58	%
Expected term (years)	4.0

Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity [Table Text Block]

		Weighted
		Average Grant
	Number of	Date Fair Value
	Shares	(per share)
Nonvested awards, December 31, 2011	169,863	$	20.66
Granted	42,754	$	39.43
Vested	(79,519)	$	12.33
Forfeited	(5,104)	$	28.32
Nonvested awards, June 30, 2012	127,994	$	31.79

		Weighted
		Average Grant
	Number of	Date Fair Value
	units	(per unit)
Nonvested awards, December 31, 2011	0	$	0.00
Granted	2,100	$	38.13
Vested	0	$	0.00
Forfeited	0	$	0.00
Nonvested awards, June 30, 2012	2,100	$	38.13

		Weighted
		Average Grant
	Number of	Date Fair Value
	Shares	(per share)
Nonvested awards, December 31, 2011	62,250	$	7.72
Granted	0	$	0.00
Vested	(59,850)	$	7.72
Forfeited	(2,400)	$	7.72
Nonvested awards, June 30, 2012	0	$	0.00