Short-Term Borrowings and Long-Term Debt - Junior Subordinated Debt (Details) - Junior subordinated debt - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Debt Instrument [Line Items]
Aggregate Principal Amount of Trust Securities	$ 4,641	$ 4,641
Aggregate Principal Amount of the Junior Subordinated Debt	$ 148,000	148,000
East West Capital Trust V
Debt Instrument [Line Items]
Stated Interest Rate, basis spread (as a percent)	2.06%
Current Rate	7.44%
Aggregate Principal Amount of Trust Securities	$ 464	464
Aggregate Principal Amount of the Junior Subordinated Debt	$ 15,000	15,000
East West Capital Trust VI
Debt Instrument [Line Items]
Stated Interest Rate, basis spread (as a percent)	1.76%
Current Rate	7.15%
Aggregate Principal Amount of Trust Securities	$ 619	619
Aggregate Principal Amount of the Junior Subordinated Debt	$ 20,000	20,000
East West Capital Trust VII
Debt Instrument [Line Items]
Stated Interest Rate, basis spread (as a percent)	1.61%
Current Rate	7.00%
Aggregate Principal Amount of Trust Securities	$ 928	928
Aggregate Principal Amount of the Junior Subordinated Debt	$ 30,000	30,000
East West Capital Trust VIII
Debt Instrument [Line Items]
Stated Interest Rate, basis spread (as a percent)	1.66%
Current Rate	7.02%
Aggregate Principal Amount of Trust Securities	$ 619	619
Aggregate Principal Amount of the Junior Subordinated Debt	$ 18,000	18,000
East West Capital Trust IX
Debt Instrument [Line Items]
Stated Interest Rate, basis spread (as a percent)	2.16%
Current Rate	7.55%
Aggregate Principal Amount of Trust Securities	$ 928	928
Aggregate Principal Amount of the Junior Subordinated Debt	$ 30,000	30,000
MCBI Statutory Trust I
Debt Instrument [Line Items]
Stated Interest Rate, basis spread (as a percent)	1.81%
Current Rate	7.20%
Aggregate Principal Amount of Trust Securities	$ 1,083	1,083
Aggregate Principal Amount of the Junior Subordinated Debt	$ 35,000	$ 35,000