Hurricane reserve release due to updated assesments of financial performance

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Amount due in settlement of a claim for reimbursement from an insurance company when the Company has suffered a loss covered under an insurance policy.

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Amount of expense for salary, wage, profit sharing; incentive and equity-based compensation; and other employee benefit.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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No definition available.

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Amount of cash inflow for proceeds from settlement of insurance claim, classified as investing activities. Excludes insurance settlement classified as operating activities.

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Amount of cash inflow for proceeds from settlement of insurance claim, classified as operating activities. Excludes insurance settlement classified as investing activities.

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UPDATE ON IMPACTS OF NATURAL DISASTERS- Additional information (Detail) - USD ($) $ in Thousands	3 Months Ended			6 Months Ended
	Jun. 30, 2019	Mar. 31, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018	Dec. 31, 2018
Liability For Catastrophe Claims [Line Items]
Net Loan Loss Reserve Release		$ 6,400
Insurance Settlements Receivable	$ 1,500			$ 1,500		$ 3,400
Employees' compensation and benefits	40,813		$ 39,555	80,109	$ 80,239
Proceeds from the settlement of insurance claims				$ 202	$ 5,118
Hurricane [Member]
Liability For Catastrophe Claims [Line Items]
Employees' compensation and benefits	(2,300)
Insurance proceeds in excess of losses incurred	600
Proceeds from the settlement of insurance claims	$ 1,500