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Investments - Textual (Details)	3 Months Ended		9 Months Ended
	Sep. 30, 2020 USD ($) security Loans	Sep. 30, 2019 USD ($)	Sep. 30, 2020 USD ($) security Loans	Sep. 30, 2019 USD ($)	Dec. 31, 2019 USD ($)
Schedule of Available-for-sale Securities
Available-for-sale Securities pledged as collateral | $	$ 157,758,000		$ 157,758,000
Unrealized gain (loss) of available-for sale securities | $	16,279,000		16,279,000		$ 3,999,000
AOCI available-for-sale securities adjustment tax | $	4,813,000		4,813,000		1,182,000
Income tax impact from the reclassification of unrealized net gains on available-for-sale securities to realized net gains on available-for-sale securities | $	17,000	$ 498,000	$ 1,241,000	$ 1,536,000
Threshold period of value decline in available-for-sale securities to be considered other than temporary impairment			12 months
Threshold percentage of value decline in available-for-sale securities to be considered other than temporary impairment			10.00%
Threshold amount of value decline in available-for-sale securities to be considered other than temporary impairment | $			$ 10,000
Other than temporary impairment losses on investment securities | $			0
Debt securities, amortized cost | $	$ 615,575,000		$ 615,575,000
Available-for-sale Securities, Number of Securities, Loss Position | Loans	2		2
U.S. Government agencies
Schedule of Available-for-sale Securities
Available-for-sale securities, number of positions | security	11		11
Debt securities, amortized cost | $	$ 40,913,000		$ 40,913,000		14,740,000
U.S. Government agencies | Less than 12 months
Schedule of Available-for-sale Securities
Available-for-sale securities in unrealized loss positions, number of positions | security	5		5
U.S. Government agencies | Greater than 12 months
Schedule of Available-for-sale Securities
Available-for-sale securities in unrealized loss positions, number of positions | security	5		5
Obligations of states and political subdivisions
Schedule of Available-for-sale Securities
Available-for-sale securities, number of positions | security	87		87
Debt securities, amortized cost | $	$ 280,506,000		$ 280,506,000		89,574,000
Obligations of states and political subdivisions | Less than 12 months
Schedule of Available-for-sale Securities
Available-for-sale securities in unrealized loss positions, number of positions | security	10		10
U.S. Government sponsored entities and agencies collateralized by residential mortgage obligations
Schedule of Available-for-sale Securities
Available-for-sale securities, number of positions | security	118		118
Debt securities, amortized cost | $	$ 216,084,000		$ 216,084,000		198,125,000
U.S. Government sponsored entities and agencies collateralized by residential mortgage obligations | Less than 12 months
Schedule of Available-for-sale Securities
Available-for-sale securities in unrealized loss positions, number of positions | security	12		12
U.S. Government sponsored entities and agencies collateralized by residential mortgage obligations | Greater than 12 months
Schedule of Available-for-sale Securities
Available-for-sale securities in unrealized loss positions, number of positions | security	17		17
Private label mortgage and asset backed securities
Schedule of Available-for-sale Securities
Available-for-sale securities, number of positions | security	24		24
Debt securities, amortized cost | $	$ 54,072,000		$ 54,072,000		155,308,000
Private label mortgage and asset backed securities | Less than 12 months
Schedule of Available-for-sale Securities
Available-for-sale securities in unrealized loss positions, number of positions | security	4		4
Private label mortgage and asset backed securities | Greater than 12 months
Schedule of Available-for-sale Securities
Available-for-sale securities in unrealized loss positions, number of positions | security	0		0
Corporate debt securities
Schedule of Available-for-sale Securities
Available-for-sale securities, number of positions | security	7		7
Debt securities, amortized cost | $	$ 24,000,000		$ 24,000,000		$ 9,000,000

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