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Fair Value of Assets and Liabilities - Carrying Amount and Estimated Fair Value of Financial Instruments Not Carried at Fair Value (Details) - USD ($) $ in Thousands | Sep. 30, 2021 | Dec. 31, 2020
--- | --- | ---
Carrying Amount |  |
Financial assets |  |
Cash and cash equivalents | $ 348,888 | $ 633,142
Debt securities, held-to-maturity | 1,128,299 | 189,836
Loans receivable, net of ACL | 11,140,282 | 10,964,453
Total financial assets | 12,617,469 | 11,787,431
Financial liabilities |  |
Term deposits | 919,852 | 978,779
Repurchase agreements and other borrowed funds | 1,074,610 | 1,037,651
Subordinated debentures | 132,580 | 139,959
Total financial liabilities | 2,127,042 | 2,156,389
Estimated Fair Value | Level 1 |  |
Financial assets |  |
Cash and cash equivalents | 348,888 | 633,142
Debt securities, held-to-maturity | 0 | 0
Loans receivable, net of ACL | 0 | 0
Total financial assets | 348,888 | 633,142
Financial liabilities |  |
Term deposits | 0 | 0
Repurchase agreements and other borrowed funds | 0 | 0
Subordinated debentures | 0 | 0
Total financial liabilities | 0 | 0
Estimated Fair Value | Level 2 |  |
Financial assets |  |
Cash and cash equivalents | 0 | 0
Debt securities, held-to-maturity | 1,146,453 | 203,216
Loans receivable, net of ACL | 0 | 0
Total financial assets | 1,146,453 | 203,216
Financial liabilities |  |
Term deposits | 922,810 | 983,491
Repurchase agreements and other borrowed funds | 1,074,610 | 1,037,651
Subordinated debentures | 130,081 | 123,944
Total financial liabilities | 2,127,501 | 2,145,086
Estimated Fair Value | Level 3 |  |
Financial assets |  |
Cash and cash equivalents | 0 | 0
Debt securities, held-to-maturity | 0 | 0
Loans receivable, net of ACL | 11,352,711 | 11,233,002
Total financial assets | 11,352,711 | 11,233,002
Financial liabilities |  |
Term deposits | 0 | 0
Repurchase agreements and other borrowed funds | 0 | 0
Subordinated debentures | 0 | 0
Total financial liabilities | $ 0 | $ 0

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- Definition Fair value portion of held-to-maturity investment securities. + References No definition available. + Details
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- Definition Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. + References No definition available. + Details
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- Definition Fair value portion of deposit liabilities held by the entity, including, but not limited to, foreign and domestic, interest and noninterest bearing, demand deposits, saving deposits, negotiable orders of withdrawal (NOW) and time deposits. + References No definition available. + Details
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- Definition Fair value portion of short term borrowing where a bank borrows, at the federal funds rate, from another bank and securities that an entity sells and agrees to repurchase at a specified date for a specified price. + References No definition available. + Details
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- Definition Fair value of financial obligations, including, but not limited to, debt instruments, derivative liabilities, federal funds purchased and sold under agreements to repurchase, securities loaned or sold under agreements to repurchase, financial instruments sold not yet purchased, guarantees, line of credit, loans and notes payable, servicing liability, and trading liabilities. + References No definition available. + Details
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- Definition Fair value portion of loan receivable, including, but not limited to, mortgage loans held for investment, finance receivables held for investment, policy loans on insurance contracts. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -URI http://asc.fasb.org/subtopic&trid=2196772 + Details
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