Annual report pursuant to Section 13 and 15(d)

Fair Value Measurements - Estimated Fair Values of Financial Instruments (Detail)

v3.10.0.1
Fair Value Measurements - Estimated Fair Values of Financial Instruments (Detail) - USD ($)
$ in Thousands
Dec. 31, 2018
Dec. 31, 2017
Financial assets:    
Cash and due from banks $ 155,376 $ 153,826
Estimated Fair Value 574,908 578,804
Accrued interest receivable 13,331 12,770
Financial liabilities:    
Noninterest-bearing deposits 1,284,530 1,312,274
Interest-bearing deposits 3,462,705 3,036,380
Accrued interest payable 11,379 5,309
Carrying Amount    
Financial assets:    
Cash and due from banks 155,376 153,826
Estimated Fair Value 574,908 578,804
Loans held for sale 9,390 6,394
Loans and leases receivable, net of allowance for loan and lease losses 4,568,566 4,273,415
Accrued interest receivable 13,331 12,770
FHLB stock 16,385 16,385
Financial liabilities:    
Noninterest-bearing deposits 1,284,530 1,312,274
Interest-bearing deposits 3,462,705 3,036,380
Borrowings 172,808 267,270
Accrued interest payable 11,379 5,309
Off-balance sheet items:    
Commitments to extend credit 325,100 318,634
Standby letters of credit 32,500 19,294
Commercial letters of credit 13,848 9,308
Fair Value | Quoted Prices in Active Markets for Identical Assets    
Financial assets:    
Cash and due from banks 155,376 153,826
Estimated Fair Value 39,830 22,538
Loans held for sale 0 0
Loans and leases receivable, net of allowance for loan and lease losses 0 0
Accrued interest receivable 13,331 12,770
FHLB stock 0 0
Financial liabilities:    
Noninterest-bearing deposits 0 0
Interest-bearing deposits 0 0
Borrowings 0 0
Accrued interest payable 11,379 5,309
Off-balance sheet items:    
Commitments to extend credit 0 0
Standby letters of credit 0 0
Commercial letters of credit 0 0
Fair Value | Significant Observable Inputs with No Active Market with Identical Characteristics    
Financial assets:    
Cash and due from banks 0 0
Estimated Fair Value 535,078 556,266
Loans held for sale 9,905 6,394
Loans and leases receivable, net of allowance for loan and lease losses 0 0
Accrued interest receivable 0 0
FHLB stock 16,385 16,385
Financial liabilities:    
Noninterest-bearing deposits 1,284,530 1,312,274
Interest-bearing deposits 0 0
Borrowings 98,020 0
Accrued interest payable 0 0
Off-balance sheet items:    
Commitments to extend credit 0 0
Standby letters of credit 0 0
Commercial letters of credit 0 0
Fair Value | Significant Unobservable Inputs    
Financial assets:    
Cash and due from banks 0 0
Estimated Fair Value 0 0
Loans held for sale 0 0
Loans and leases receivable, net of allowance for loan and lease losses 4,518,716 4,213,689
Accrued interest receivable 0 0
FHLB stock 0 0
Financial liabilities:    
Noninterest-bearing deposits 0 0
Interest-bearing deposits 3,458,523 2,973,139
Borrowings 54,939 267,270
Accrued interest payable 0 0
Off-balance sheet items:    
Commitments to extend credit 325,100 318,634
Standby letters of credit 32,500 19,294
Commercial letters of credit $ 13,848 $ 9,308