Stock Based Compensation (Tables)

9 Months Ended

Sep. 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 Nine Months Ended September 30,
	2012		2011
Stock options	$	403	$	360
Nonvested stock awards and restricted stock units		1,120		1,031
Employee stock purchase plan		35		33
Non-elective and elective 401(k) matching contribution in stock		1,351		1,206
Director stock ownership plan		45		45
Total share-based compensation expense	$	2,954	$	2,675

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	(167,025)		12.00
	Options forfeited	(8,470)		29.32
Balance at September 30, 2012		118,004	$	29.31		5.2
Exercisable at September 30, 2012		27,909	$	21.63		4.3

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 9/30/2012	Life	Price		9/30/2012	Price
$	0.00	-	$	10.00	9,551	3.4	$	6.93	9,551	$	6.93
$	10.01	-	$	20.00	38,139	4.2		18.85	8,073		18.97
$	20.01	-	$	30.00	0	0		0	0		0
$	30.01	-	$	40.00	68,122	5.9		37.76	10,285		37.37
$	40.01	-	$	50.00	2,192	6.8		46.21	0		0
					118,004	5.2		29.31	27,909		21.63

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

	March 31,		June 30,
	2012		2012
Number of options granted	37,965		2,192
Dividend Yield	3.09	%	2.69	%
Expected Volatility	69.90	%	69.09	%
Risk-free interest rate	0.61	%	0.58	%
Expected term (years)	4.0		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	(83,019)	$	12.99
Forfeited	(6,154)	$	28.39
Nonvested awards, September 30, 2012	123,444	$	31.93

		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, September 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, September 30, 2012	0	$	0.00