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Restricted Cash Balances	3 Months Ended
Restricted Cash Balances	Mar. 31, 2019
Restricted Cash [Abstract]
Restricted Cash Balances	RESTRICTED CASH BALANCES The Company is required to maintain reserve balances with the FRBSF. Such reserve requirements are based on a percentage of deposit liabilities and may be satisfied by cash on hand. The average reserves required to be held at the FRBSF for the three months ended March 31, 2019 and year ended December 31, 2018 were $92.2 million and $77.0 million. As of March 31, 2019 and December 31, 2018, we pledged cash collateral for our derivative contracts of $2.3 million and $2.6 million.