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Fair Value Accounting and Measurement (Carrying Amounts and Estimated Fair Values of Selected Financial Instruments) (Details) - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Assets |  |
Interest-earning deposits with banks | $ 434,867 | $ 24,132
Debt Securities, Available-for-sale | 5,210,134 | 3,746,142
Estimate of Fair Value Measurement |  |
Assets |  |
Cash and due from banks | 218,899 | 223,541
Interest-earning deposits with banks | 434,867 | 24,132
Debt Securities, Available-for-sale | 5,210,134 | 3,746,172
FHLB stock | 10,280 | 48,120
Loans held for sale | 26,481 | 17,718
Loans | 9,720,592 | 8,883,865
Interest Rate Cash Flow Hedge Asset at Fair Value |  | 14,727
Liabilities |  |
Time Deposits | 338,815 | 397,736
FHLB Advances and FRB Borrowings | 9,295 | 952,762
Repurchase agreements | 73,859 | 64,437
Subordinated Debentures | 35,414 | 35,491
Carrying Amount |  |
Assets |  |
Cash and due from banks | 218,899 | 223,541
Interest-earning deposits with banks | 434,867 | 24,132
Debt Securities, Available-for-sale | 5,210,134 | 3,746,142
FHLB stock | 10,280 | 48,120
Loans held for sale | 26,481 | 17,718
Loans | 9,278,520 | 8,659,497
Interest Rate Cash Flow Hedge Asset at Fair Value |  | 14,727
Liabilities |  |
Time Deposits | 338,845 | 400,070
FHLB Advances and FRB Borrowings | 7,414 | 953,469
Repurchase agreements | 73,859 | 64,437
Subordinated Debentures | 35,092 | 35,277
Fair Value, Inputs, Level 1 | Estimate of Fair Value Measurement |  |
Assets |  |
Cash and due from banks | 218,899 | 223,541
Interest-earning deposits with banks | 434,867 | 24,132
Debt Securities, Available-for-sale | 0 | 0
FHLB stock | 0 | 0
Loans held for sale | 0 | 0
Loans | 0 | 0
Interest Rate Cash Flow Hedge Asset at Fair Value |  | 0
Liabilities |  |
Time Deposits | 0 | 0
FHLB Advances and FRB Borrowings | 0 | 0
Repurchase agreements | 0 | 0
Subordinated Debentures | 0 | 0
Fair Value, Inputs, Level 2 | Estimate of Fair Value Measurement |  |
Assets |  |
Cash and due from banks | 0 | 0
Interest-earning deposits with banks | 0 | 0
Debt Securities, Available-for-sale | 5,210,134 | 3,746,172
FHLB stock | 10,280 | 48,120
Loans held for sale | 26,481 | 17,718
Loans | 0 | 0
Interest Rate Cash Flow Hedge Asset at Fair Value |  | 14,727
Liabilities |  |
Time Deposits | 338,815 | 397,736
FHLB Advances and FRB Borrowings | 9,295 | 952,762
Repurchase agreements | 73,859 | 64,437
Subordinated Debentures | 35,414 | 35,491
Fair Value, Inputs, Level 3 | Estimate of Fair Value Measurement |  |
Assets |  |
Cash and due from banks | 0 | 0
Interest-earning deposits with banks | 0 | 0
Debt Securities, Available-for-sale | 0 | 0
FHLB stock | 0 | 0
Loans held for sale | 0 | 0
Loans | 9,720,592 | 8,883,865
Interest Rate Cash Flow Hedge Asset at Fair Value |  | 0
Liabilities |  |
Time Deposits | 0 | 0
FHLB Advances and FRB Borrowings | 0 | 0
Repurchase agreements | 0 | 0
Subordinated Debentures | 0 | 0
Interest Rate Swap | Estimate of Fair Value Measurement |  |
Assets |  |
Interest rate derivative assets, at fair value | 46,184 | 19,144
Liabilities |  |
Interest rate derivative liabilities, at fair value | 46,637 | 19,145
Interest Rate Swap | Carrying Amount |  |
Assets |  |
Interest rate derivative assets, at fair value | 46,184 | 19,144
Liabilities |  |
Interest rate derivative liabilities, at fair value | 46,637 | 19,145
Interest Rate Swap | Fair Value, Inputs, Level 1 | Estimate of Fair Value Measurement |  |
Assets |  |
Interest rate derivative assets, at fair value | 0 | 0
Liabilities |  |
Interest rate derivative liabilities, at fair value | 0 | 0
Interest Rate Swap | Fair Value, Inputs, Level 2 | Estimate of Fair Value Measurement |  |
Assets |  |
Interest rate derivative assets, at fair value | 46,184 | 19,144
Liabilities |  |
Interest rate derivative liabilities, at fair value | 46,637 | 19,145
Interest Rate Swap | Fair Value, Inputs, Level 3 | Estimate of Fair Value Measurement |  |
Assets |  |
Interest rate derivative assets, at fair value | 0 | 0
Liabilities |  |
Interest rate derivative liabilities, at fair value | 0 | $ 0
Interest Rate Lock Commitments | Estimate of Fair Value Measurement |  |
Assets |  |
Interest rate derivative assets, at fair value | 1,096 |
Interest Rate Lock Commitments | Carrying Amount |  |
Assets |  |
Interest rate derivative assets, at fair value | 1,096 |
Interest Rate Lock Commitments | Fair Value, Inputs, Level 1 | Estimate of Fair Value Measurement |  |
Assets |  |
Interest rate derivative assets, at fair value | 0 |
Interest Rate Lock Commitments | Fair Value, Inputs, Level 2 | Estimate of Fair Value Measurement |  |
Assets |  |
Interest rate derivative assets, at fair value | 0 |
Interest Rate Lock Commitments | Fair Value, Inputs, Level 3 | Estimate of Fair Value Measurement |  |
Assets |  |
Interest rate derivative assets, at fair value | 1,096 |
Forward sales contracts | Estimate of Fair Value Measurement |  |
Liabilities |  |
Interest rate derivative liabilities, at fair value | 165 |
Forward sales contracts | Carrying Amount |  |
Liabilities |  |
Interest rate derivative liabilities, at fair value | 165 |
Forward sales contracts | Fair Value, Inputs, Level 1 | Estimate of Fair Value Measurement |  |
Liabilities |  |
Interest rate derivative liabilities, at fair value | 0 |
Forward sales contracts | Fair Value, Inputs, Level 2 | Estimate of Fair Value Measurement |  |
Liabilities |  |
Interest rate derivative liabilities, at fair value | 165 |
Forward sales contracts | Fair Value, Inputs, Level 3 | Estimate of Fair Value Measurement |  |
Liabilities |  |
Interest rate derivative liabilities, at fair value | $ 0 |

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- Definition For banks and other depository institutions (including Federal Reserve Banks, if applicable): Interest-bearing deposits in other financial institutions for relatively short periods of time including, for example, certificates of deposits, which are presented separately from cash on the balance sheet. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section 45 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=117340910&loc=d3e59706-112781 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.2) -URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878 + Details
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