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LOANS - Aging of Troubled Debt Restructurings (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Troubled Debt Restructurings
Loans current and past due less than 30 days	$ 1,563,091	$ 1,627,899
Nonaccrual loans	21,341	21,416
Past Due 30-89 Days
Troubled Debt Restructurings
Loans past due	3,167	8,607
Past Due 90+ Days
Troubled Debt Restructurings
Loans past due	9,450	7,703
Troubled Debt Restructuring
Troubled Debt Restructurings
Loans current and past due less than 30 days	144	166
Nonaccrual loans	5,457	6,867
Troubled debt restructurings	5,823	7,451
Troubled Debt Restructuring | Past Due 30-89 Days
Troubled Debt Restructurings
Loans past due	88	0
Troubled Debt Restructuring | Past Due 90+ Days
Troubled Debt Restructurings
Loans past due	$ 134	$ 418

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Recorded investment in financing receivables that are current and less than 30 days past due.

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- Definition

Amount of financing receivable modified as troubled debt restructuring.

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