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Fair Value Accounting and Measurement (Carrying Amounts and Estimated Fair Values of Selected Financial Instruments) (Details) - USD ($) $ in Thousands | Mar. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Assets |  |
Interest-earning deposits with banks | $ 25,357 | $ 24,132
Debt securities available for sale at fair value | 3,553,128 | 3,746,142
Estimate of Fair Value Measurement [Member] |  |
Assets |  |
Cash and due from banks | 190,399 | 223,541
Interest-earning deposits with banks | 25,357 | 24,132
Debt securities available for sale at fair value | 3,553,128 | 3,746,142
FHLB stock | 38,280 | 48,120
Loans held for sale | 9,701 | 17,718
Loans | 8,998,063 | 8,883,865
Interest rate contracts | 49,775 | 19,144
Interest Rate Cash Flow Hedge Asset at Fair Value | 37,209 | 14,727
Liabilities |  |
Deposits | 353,578 | 397,736
FHLB advances and FRB borrowings | 714,022 |
FHLB advances |  | 952,762
Repurchase agreements | 29,252 | 64,437
Subordinated Debt Obligations, Fair Value Disclosure | 35,309 | 35,491
Revolving line of credit | 5,005 |
Interest rate contracts | 49,777 | 19,145
Reported Value Measurement [Member] |  |
Assets |  |
Cash and due from banks | 190,399 | 223,541
Interest-earning deposits with banks | 25,357 | 24,132
Debt securities available for sale at fair value | 3,553,128 | 3,746,142
FHLB stock | 38,280 | 48,120
Loans held for sale | 9,701 | 17,718
Loans | 8,811,247 | 8,659,497
Interest rate contracts | 49,775 | 19,144
Interest Rate Cash Flow Hedge Asset at Fair Value | 37,209 | 14,727
Liabilities |  |
Deposits | 353,536 | 400,070
FHLB advances and FRB borrowings | 712,455 |
FHLB advances |  | 953,469
Repurchase agreements | 29,252 | 64,437
Subordinated Debt Obligations, Fair Value Disclosure | 35,231 | 35,277
Revolving line of credit | 5,000 |
Interest rate contracts | 49,777 | 19,145
Fair Value, Inputs, Level 1 [Member] | Estimate of Fair Value Measurement [Member] |  |
Assets |  |
Cash and due from banks | 190,399 | 223,541
Interest-earning deposits with banks | 25,357 | 24,132
Debt securities available for sale at fair value | 0 | 0
FHLB stock | 0 | 0
Loans held for sale | 0 | 0
Loans | 0 | 0
Interest rate contracts | 0 | 0
Interest Rate Cash Flow Hedge Asset at Fair Value | 0 | 0
Liabilities |  |
Deposits | 0 | 0
FHLB advances and FRB borrowings | 0 |
FHLB advances |  | 0
Repurchase agreements | 0 | 0
Subordinated Debt Obligations, Fair Value Disclosure | 0 | 0
Revolving line of credit | 0 |
Interest rate contracts | 0 | 0
Fair Value, Inputs, Level 2 [Member] | Estimate of Fair Value Measurement [Member] |  |
Assets |  |
Cash and due from banks | 0 | 0
Interest-earning deposits with banks | 0 | 0
Debt securities available for sale at fair value | 3,553,128 | 3,746,142
FHLB stock | 38,280 | 48,120
Loans held for sale | 9,701 | 17,718
Loans | 0 | 0
Interest rate contracts | 49,775 | 19,144
Interest Rate Cash Flow Hedge Asset at Fair Value | 37,209 | 14,727
Liabilities |  |
Deposits | 353,578 | 397,736
FHLB advances and FRB borrowings | 714,022 |
FHLB advances |  | 952,762
Repurchase agreements | 29,252 | 64,437
Subordinated Debt Obligations, Fair Value Disclosure | 35,309 | 35,491
Revolving line of credit | 5,005 |
Interest rate contracts | 49,777 | 19,145
Fair Value, Inputs, Level 3 [Member] | Estimate of Fair Value Measurement [Member] |  |
Assets |  |
Cash and due from banks | 0 | 0
Interest-earning deposits with banks | 0 | 0
Debt securities available for sale at fair value | 0 | 0
FHLB stock | 0 | 0
Loans held for sale | 0 | 0
Loans | 8,998,063 | 8,883,865
Interest rate contracts | 0 | 0
Interest Rate Cash Flow Hedge Asset at Fair Value | 0 | 0
Liabilities |  |
Deposits | 0 | 0
FHLB advances and FRB borrowings | 0 |
FHLB advances |  | 0
Repurchase agreements | 0 | 0
Subordinated Debt Obligations, Fair Value Disclosure | 0 | 0
Revolving line of credit | 0 |
Interest rate contracts | $ 0 | $ 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=6876686&loc=d3e534808-122878 + Details
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