ALLOWANCE FOR CREDIT LOSSES - Amortized Cost Basis of Collateral Dependent Loans Individually Evaluated to Determine Credit Losses and Related ACL Allocated to Loans (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Financing Receivable Allowance For Credit Losses [Line Items]
Total Allowance for Credit Losses	$ 33,776	$ 24,200
Collateral Dependent Loans
Financing Receivable Allowance For Credit Losses [Line Items]
Amortized cost	2,818	10,516
Total Allowance for Credit Losses		1,095
Collateral Dependent Loans | Real Estate
Financing Receivable Allowance For Credit Losses [Line Items]
Amortized cost	2,568	10,144
Collateral Dependent Loans | Cash
Financing Receivable Allowance For Credit Losses [Line Items]
Amortized cost	250	250
Collateral Dependent Loans | Equipment/Receivables
Financing Receivable Allowance For Credit Losses [Line Items]
Amortized cost		122
Collateral Dependent Loans | Single family
Financing Receivable Allowance For Credit Losses [Line Items]
Amortized cost	2,568	10,144
Total Allowance for Credit Losses		1,051
Collateral Dependent Loans | Single family | Real Estate
Financing Receivable Allowance For Credit Losses [Line Items]
Amortized cost	2,568	10,144
Collateral Dependent Loans | Commercial and Industrial Loans
Financing Receivable Allowance For Credit Losses [Line Items]
Amortized cost	250	372
Total Allowance for Credit Losses		44
Collateral Dependent Loans | Commercial and Industrial Loans | Cash
Financing Receivable Allowance For Credit Losses [Line Items]
Amortized cost	$ 250	250
Collateral Dependent Loans | Commercial and Industrial Loans | Equipment/Receivables
Financing Receivable Allowance For Credit Losses [Line Items]
Amortized cost		$ 122