Amount of borrowings as of the balance sheet date from the Federal Home Loan Bank, which are primarily used to cover shortages in the required reserve balance and liquidity shortages.

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Discloses the single interest rate [if] applicable to the advances from the Federal Home Loan Bank, by branch, as of the Balance Sheet date.

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FEDERAL HOME LOAN BANK AND FEDERAL RESERVE BANK ADVANCES - FHLB Advances (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Outstanding Balances	$ 961,747	$ 978,702
FHLB of San Francisco
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Outstanding Balances	961,747	978,702
FHLB of San Francisco \| Fixed rate short-term
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Outstanding Balances	$ 0	1,500
FHLB of San Francisco \| Fixed rate short-term \| Minimum
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Interest rate	0.00%
FHLB of San Francisco \| Fixed rate short-term \| Maximum
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Interest rate	0.00%
FHLB of San Francisco \| Fixed rate short-term \| Weighted Average
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Interest rate	0.00%
FHLB of San Francisco \| Fixed rate long-term
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Outstanding Balances	$ 961,747	$ 977,202
FHLB of San Francisco \| Fixed rate long-term \| Minimum
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Interest rate	0.00%
FHLB of San Francisco \| Fixed rate long-term \| Maximum
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Interest rate	7.33%
FHLB of San Francisco \| Fixed rate long-term \| Weighted Average
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Interest rate	2.19%