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Loans and Leases - Additional Information (Detail) | 12 Months Ended |
--- | --- | ---
Dec. 31, 2018 USD ($) Property | Dec. 31, 2017 USD ($) Property
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and leases receivable | $ 4,600,540,000 | $ 4,304,458,000
Accrued interest receivable | 13,331,000 | 12,770,000
Loans pledged to secure advances from the FHLB | $ 1,100,000,000 | $ 1,100,000,000
Number of real estate properties | Property | 7 | 6
Net carrying value of other real estate property | $ 663,000 | $ 1,946,000
TDR loans receivable | $ 10,300,000 | 15,400,000
Principal and interest due | 6 months |
Reserves relating to loans included in allowance for loan losses | $ 313,000 | 2,200,000
Loans 90 days or more past due and still accruing | 4,000 | 0
Home equity lines of credit |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and leases receivable | 10,300,000 | 14,200,000
Loans and leases receivable |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Accrued interest receivable | $ 10,900,000 | $ 10,200,000

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- Definition Recorded investment in financing receivables that are 90 days or more past due and still accruing. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 7 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=84173941&loc=d3e5111-111524 + Details
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- Definition Carrying amount as of the balance sheet date of interest earned but not received. Also called accrued interest or accrued interest receivable. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.8) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Amount before allowance of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=82891408&loc=d3e4428-111522 + Details
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- Definition Carrying amount as of the balance sheet date of loans that have been pledged as collateral for borrowings. If the secured party has the right by contract or custom to sell or re-pledge the collateral, then the debtor reclassifies that asset and report that asset in its statement of financial position separately from other assets not so encumbered. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 30 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=66007379&loc=d3e113888-111728 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=84173941&loc=d3e5086-111524 + Details
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