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Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Amounts Reclassified from AOCI [Abstract]
Securities gains (losses)	$ 14	$ (2)	$ 574	$ (288)
Tax expense (benefit)	2,504	3,044	4,807	8,425
Net income	15,269	16,106	48,532	43,519
Unrealized Gains on AFS Securities [Member] | Reclassification Out of Accumulated Other Comprehensive Income [Member]
Amounts Reclassified from AOCI [Abstract]
Securities gains (losses)	(2)	(2)	4	149
Tax expense (benefit)	(1)	0	1	32
Net income	$ (1)	$ (2)	$ 3	$ 117

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Amount of unrealized and realized gain (loss) on investment in debt and equity securities.

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