Loans and Other Real Estate - Company's Non-Performing Assets and Its Accruing Troubled Debt Restructurings (Detail) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total non-accrual loans	$ 14,424	$ 12,130
Other real estate and other repossessed assets	532	830
TOTAL NON-PERFORMING ASSETS	14,956	12,960
Troubled debt restructurings, still accruing	5,139	9,293
Commercial, secured by real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total non-accrual loans	10,205	7,192
Commercial, industrial and other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total non-accrual loans	662	1,019
Equipment finance
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total non-accrual loans	136	501
Real estate - residential mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total non-accrual loans	1,548	1,986
Home equity and consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total non-accrual loans	$ 1,873	$ 1,432