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DISCLOSURES ABOUT FAIR VALUE OF FINANCIAL INSTRUMENTS - Schedule Of Financial Instruments Fair Value (Details) $ in Thousands	Jun. 30, 2021 USD ($)	Dec. 31, 2020 USD ($)
Junior Subordinated Debt
Financial Instruments Owned Carrying Amount	$ 25,774	$ 25,774
Financial Instruments, Owned, at Fair Value	$ 25,774	$ 25,774
Fair Value Hierarchy Level	3	3
Subordinated Debt
Financial Instruments Owned Carrying Amount	$ 148,763	$ 148,397
Financial Instruments, Owned, at Fair Value	$ 156,375	$ 157,032
Fair Value Hierarchy Level	2	2
Deposits
Financial Instruments Owned Carrying Amount	$ 4,566,353	$ 4,516,903
Financial Instruments, Owned, at Fair Value	$ 4,569,829	$ 4,523,586
Fair Value Hierarchy Level	3	3
Short-term Debt
Financial Instruments Owned Carrying Amount	$ 159,550	$ 165,692
Financial Instruments, Owned, at Fair Value	$ 159,550	$ 165,692
Fair Value Hierarchy Level	3	3
Unrecognized financial instruments (net of contractual value) | Commitments to Originate Loans
Fair Value Hierarchy Level	3	3
Unrecognized financial instruments (net of contractual value) | Letter of Credit
Financial Instruments Owned Carrying Amount	$ 62	$ 84
Financial Instruments, Owned, at Fair Value	$ 62	$ 84
Fair Value Hierarchy Level	3	3
Unrecognized financial instruments (net of contractual value) | Line of Credit
Fair Value Hierarchy Level	3	3
Interest payable
Financial Instruments Owned Carrying Amount	$ 2,256	$ 2,594
Financial Instruments, Owned, at Fair Value	$ 2,256	$ 2,594
Fair Value Hierarchy Level	3	3
Loans Receivable
Financial Instruments Owned Carrying Amount	$ 4,214,267	$ 4,296,804
Financial Instruments, Owned, at Fair Value	$ 4,213,282	$ 4,303,909
Fair Value Hierarchy Level	3	3
Cash and Cash Equivalents
Financial Instruments Owned Carrying Amount	$ 681,804	$ 563,729
Financial Instruments, Owned, at Fair Value	$ 681,804	$ 563,729
Fair Value Hierarchy Level	1	1
Mortgage loans held for sale
Financial Instruments Owned Carrying Amount	$ 18,870	$ 17,780
Financial Instruments, Owned, at Fair Value	$ 18,870	$ 17,780
Fair Value Hierarchy Level	2	2
Interest receivable
Financial Instruments Owned Carrying Amount	$ 11,966	$ 12,793
Financial Instruments, Owned, at Fair Value	$ 11,966	$ 12,793
Fair Value Hierarchy Level	3	3
Investment in FHLBank stock and other interest-earning assets
Financial Instruments Owned Carrying Amount	$ 6,755	$ 9,806
Financial Instruments, Owned, at Fair Value	$ 6,755	$ 9,806
Fair Value Hierarchy Level	3	3

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- Definition

The aggregate fair value as of the balance sheet date of financial instruments and other positions owned by the entity including: (1) mortgages, mortgage-backed and asset backed securities; (2) US government and agency obligations; (3) state and municipal government obligations; (4) other sovereign government debt; (5) corporate obligations; (6) corporate equities; (7) principal investments; (8) derivative contracts; and (9) physical commodities. Includes both pledged and unpledged holdings.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 940
-SubTopic 320
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=35711157&loc=d3e42546-110969

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