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FAIR VALUE MEASUREMENT - FV of Financial Instruments (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Assets:
Mortgage servicing rights – multifamily and SBA	$ 76,481
Other assets - GNMA EBO loans	6,722,382	$ 5,495,726
Carrying Value
Assets:
Cash and cash equivalents	75,277	65,214
Investment securities HTM	3,118	4,169
LHFI	6,715,874	5,488,439
Federal Home Loan Bank stock	66,992	10,361
Liabilities:
Certificates of deposit	969,535	906,928
Borrowings	1,458,000	41,000
Long-term debt	224,227	126,026
Fair Value
Assets:
Cash and cash equivalents	75,277	65,214
Investment securities HTM	3,089	4,305
LHFI	6,473,097	5,588,719
Federal Home Loan Bank stock	66,992	10,361
Liabilities:
Certificates of deposit	956,983	906,064
Borrowings	1,457,994	41,000
Long-term debt	209,842	116,845
Multifamily | Carrying Value
Assets:
LHFS – multifamily and other	11,461	48,090
Mortgage servicing rights – multifamily and SBA	38,130	39,415
Multifamily | Fair Value
Assets:
LHFS – multifamily and other	11,552	48,425
Mortgage servicing rights – multifamily and SBA	42,324	43,199
Other assets - GNMA EBO loans | Carrying Value
Assets:
Other assets - GNMA EBO loans	6,102	12,342
Other assets - GNMA EBO loans | Fair Value
Assets:
Other assets - GNMA EBO loans	6,102	12,342
Level 1 | Fair Value
Assets:
Cash and cash equivalents	75,277	65,214
Investment securities HTM	0	0
LHFI	0	0
Federal Home Loan Bank stock	0	0
Liabilities:
Certificates of deposit	0	0
Borrowings		0
Long-term debt	0	0
Level 1 | Multifamily | Fair Value
Assets:
LHFS – multifamily and other	0	0
Mortgage servicing rights – multifamily and SBA	0	0
Level 1 | Other assets - GNMA EBO loans | Fair Value
Assets:
Other assets - GNMA EBO loans	0	0
Level 2 | Fair Value
Assets:
Cash and cash equivalents	0	0
Investment securities HTM	3,089	4,305
LHFI	0	0
Federal Home Loan Bank stock	66,992	10,361
Liabilities:
Certificates of deposit	956,983	906,064
Borrowings	1,457,994	41,000
Long-term debt	209,842	116,845
Level 2 | Multifamily | Fair Value
Assets:
LHFS – multifamily and other	11,552	48,425
Mortgage servicing rights – multifamily and SBA	0	0
Level 2 | Other assets - GNMA EBO loans | Fair Value
Assets:
Other assets - GNMA EBO loans	0	0
Level 3 | Fair Value
Assets:
Cash and cash equivalents	0	0
Investment securities HTM	0	0
LHFI	6,473,097	5,588,719
Federal Home Loan Bank stock	0	0
Liabilities:
Certificates of deposit	0	0
Borrowings		0
Long-term debt	0	0
Level 3 | Multifamily | Fair Value
Assets:
LHFS – multifamily and other	0	0
Mortgage servicing rights – multifamily and SBA	42,324	43,199
Level 3 | Other assets - GNMA EBO loans | Fair Value
Assets:
Other assets - GNMA EBO loans	$ 6,102	$ 12,342

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- Definition

Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

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Fair value of investment in debt security measured at amortized cost (held-to-maturity).

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