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Carrying Amount and Fair Value of Financial Instruments (Details) - USD ($) $ in Thousands | Dec. 31, 2018 | Dec. 31, 2017
--- | --- | ---
Carrying Amount |  |
Financial Assets |  |
Cash and cash equivalents | $ 203,790 | $ 200,004
Debt securities, held-to-maturity | 297,915 | 648,313
Loans receivable, net of ALLL | 8,156,310 | 6,448,256
Total financial assets | 8,658,015 | 7,296,573
Financial Liabilities |  |
Term deposits | 1,070,208 | 977,302
FHLB advances | 440,175 | 353,995
Repurchase agreements and other borrowed funds | 410,859 | 370,797
Subordinated debentures | 134,051 | 126,135
Total financial liabilities | 2,055,293 | 1,828,229
Estimated Fair Value | Level 1 |  |
Financial Assets |  |
Cash and cash equivalents | 203,790 | 200,004
Debt securities, held-to-maturity | 0 | 0
Loans receivable, net of ALLL | 0 | 0
Total financial assets | 203,790 | 200,004
Financial Liabilities |  |
Term deposits | 0 | 0
FHLB advances | 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 | 288,256 | 660,086
Loans receivable, net of ALLL | 0 | 6,219,515
Total financial assets | 288,256 | 6,879,601
Financial Liabilities |  |
Term deposits | 1,069,777 | 978,803
FHLB advances | 439,615 | 352,886
Repurchase agreements and other borrowed funds | 410,859 | 370,797
Subordinated debentures | 120,302 | 98,023
Total financial liabilities | 2,040,553 | 1,800,509
Estimated Fair Value | Level 3 |  |
Financial Assets |  |
Cash and cash equivalents | 0 | 0
Debt securities, held-to-maturity | 0 | 0
Loans receivable, net of ALLL | 8,079,112 | 114,771
Total financial assets | 8,079,112 | 114,771
Financial Liabilities |  |
Term deposits | 0 | 0
FHLB advances | 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 of subordinated debt obligations including, but not limited to, subordinated loan, subordinated bond, subordinated debenture or junior debt. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=99377789&loc=d3e19207-110258 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=99377789&loc=d3e19207-110258 + 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 portion of borrowing from Federal Home Loan Bank (FHLBank). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.13(3)(a)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 + 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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