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Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Statement of Financial Position [Abstract]
Securities available for sale amortized cost	$ 488,433	$ 491,492
Preferred stock, par value (usd per share)	$ 1.25	$ 1.25
Preferred stock, shares authorized (in shares)	500,000	500,000
Preferred stock, shares issued (in shares)	0	0
Preferred stock, shares outstanding (in shares)	0	0
Common stock, stated value (usd per share)	$ 0.05205	$ 0.05205
Common stock, shares authorized (in shares)	50,000,000	50,000,000
Common stock, shares issued (in shares)	11,268,429	11,220,604
Common stock, shares outstanding (in shares)	11,209,146	11,199,874
Treasury stock - common - shares (in shares)	59,283	20,730

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Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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