Supplemental Cash Flow Disclosures - Non-cash Investing and Financing Activities (Details) - USD ($) $ in Thousands	9 Months Ended
Sep. 30, 2021	Sep. 30, 2020
Cash paid during the period for:
Interest	$ 11,039	$ 26,687
Income Taxes Paid, Net	22,374	16,207
Non-cash investing and financing activities:
Loans Transferred to Other Real Estate Owned and Repossessions	2,533	3,206
Fair value of loans transferred from held to maturity to held for sale	55,700	27,391
Transfer of Loans Held-for-sale to Portfolio Loans	0	1,908
Gross (decrease) increase in market value adjustment to securities available for sale	(18,138)	22,022
Gross increase (decrease) in market value adjustment to derivatives	(776)	(4,892)
Stock Issued During Period, Value, Treasury Stock Reissued	2,042	1,594
Unsettled Bank Owned Life Insurance Proceeds	(384)	(384)
Transfer to Investments	0	22,644
Other Significant Noncash Transaction, Value of Consideration Given	6,929	0
Proceeds from reissuance of treasury stock	$ 680	$ 0

Cash paid for interest and income taxes during the period.

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Gross increase in market value adjustment to securities available for sale.

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Gross Increase in Market Value Adjustment to Derivatives

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Loans Transferred to Other Real Estate Owned and Repossessions

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Unsettled Bank Owned Life Insurance Proceeds

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Unsettled Payments for the Acquisition of Treasury Stock

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The amount of cash paid during the current period to foreign, federal, state, and local authorities as taxes on income, net of any cash received during the current period as refunds for the overpayment of taxes.

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Amount of cash paid for interest, excluding capitalized interest, classified as operating activity. Includes, but is not limited to, payment to settle zero-coupon bond for accreted interest of debt discount and debt instrument with insignificant coupon interest rate in relation to effective interest rate of borrowing attributable to accreted interest of debt discount.

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The value of the noncash (or part noncash) consideration given (for example, liability, equity) in a transaction. Noncash is defined as transactions during a period that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of a transaction not resulting in cash receipts or cash payments in the period.

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The fair value of stock issued in noncash financing activities.

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Value of loans held-for-sale transferred to loans held in the entity's portfolio in noncash transactions.

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Value of loans and leases held in the entity's portfolio transferred to loans and leases held-for-sale in noncash transactions.

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Value of investments transferred to the entity's investments in noncash transactions.

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