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Stock-Based Compensation Plans (Tables)

3 Months Ended

Mar. 31, 2017

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

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

The following table summarizes the Company’s stock option activity for the three-month period ended March 31, 2017:

								Weighted
					Weighted			Average
					Average			Remaining				Aggregate
					Exercise			Contractual				Intrinsic
		Shares			Price			Term (Years)				Value*
Outstanding at December 31, 2016			1,486,257		$	26.13
Exercised			(13,387)		$	26.59
Forfeited or expired			(2,650)		$	26.08
Outstanding at March 31, 2017			1,470,220		$	26.12				3.4		$	3,002,000
Exercisable at March 31, 2017			748,620		$	26.06				2.4		$	1,610,000

* The aggregate intrinsic value of outstanding and exercisable stock options is defined as the difference between the market value of the Company's stock on March 31, 2017 of $28.08 and the exercise price multiplied by the number of in-the-money outstanding and exercisable stock options.

Schedule of Cash Proceeds Received from Share-based Payment Awards [Table Text Block]

The following table summarizes the Company’s stock option exercise activity for the three months ended March 31, 2017 and 2016:

		Three Months Ended March 31,
		2017			2016
		(Dollars in thousands)
Total intrinsic value of stock options exercised		$	41		$	1
Cash received from stock option exercises		$	356		$	12
Income tax benefit from the exercise of stock options		$	15		$	-

Schedule of Nonvested Restricted Stock Units Activity [Table Text Block]

The following table summarizes the Company’s restricted stock award activity for the three month period ended March 31, 2017:

								Weighted
					Weighted			Average
		Shares of			Average			Remaining				Aggregate
		Restricted			Grant Date			Contractual				Intrinsic
		Stock			Fair Value			Term (Years)				Value*
Non-vested at December 31, 2016			58,500		$	26.09
Issued			-			-
Vested			-
Forfeited			-			-
Non-vested at March 31, 2017			58,500		$	26.09				2.5		$	1,643,000

* The aggregate intrinsic value of non-vested restricted stock was calculated using the market value of the Company's stock on March 31, 2017 of $28.08 multiplied by the number of non-vested restricted shares outstanding.    

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- References

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- Definition

Tabular disclosure of the amount of cash proceeds received from the exercise of stock options and similar instruments granted under share-based payment arrangements and the tax benefit realized from stock options exercised during the period. Disclosure may also include the intrinsic value of stock options exercised during the period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (j)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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Tabular disclosure of the changes in outstanding nonvested restricted stock units.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(2)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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- Definition

Tabular disclosure of the number and weighted-average exercise prices (or conversion ratios) for share options (or share units) that were outstanding at the beginning and end of the year, vested and expected to vest, exercisable or convertible at the end of the year, and the number of share options or share units that were granted, exercised or converted, forfeited, and expired during the year.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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