Commitments and Contingencies - Schedule of Direct Exposure to Puerto Rico Government by Maturity (Details) - PR Government direct exposure - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2023	Dec. 31, 2022
Direct Exposure To The Puerto Rico Government By Maturity [Line Items]
Outstanding concentration of risk	$ 323,886	$ 327,000
Total concentration of risk	352,886	374,000
Investment Portfolio
Direct Exposure To The Puerto Rico Government By Maturity [Line Items]
Outstanding concentration of risk	21,601	25,000
Loans
Direct Exposure To The Puerto Rico Government By Maturity [Line Items]
Outstanding concentration of risk	302,285	$ 302,000
From PR Central Government
Direct Exposure To The Puerto Rico Government By Maturity [Line Items]
Outstanding concentration of risk	41
Total concentration of risk	41
From PR Central Government | Investment Portfolio
Direct Exposure To The Puerto Rico Government By Maturity [Line Items]
Outstanding concentration of risk	41
From PR Central Government | Loans
Direct Exposure To The Puerto Rico Government By Maturity [Line Items]
Outstanding concentration of risk	0
From PR Central Government | After 1 to 5 years
Direct Exposure To The Puerto Rico Government By Maturity [Line Items]
Outstanding concentration of risk	10
Total concentration of risk	10
From PR Central Government | After 1 to 5 years | Investment Portfolio
Direct Exposure To The Puerto Rico Government By Maturity [Line Items]
Outstanding concentration of risk	10
From PR Central Government | After 1 to 5 years | Loans
Direct Exposure To The Puerto Rico Government By Maturity [Line Items]
Outstanding concentration of risk	0
From PR Central Government | After 5 to 10 years
Direct Exposure To The Puerto Rico Government By Maturity [Line Items]
Outstanding concentration of risk	1
Total concentration of risk	1
From PR Central Government | After 5 to 10 years | Investment Portfolio
Direct Exposure To The Puerto Rico Government By Maturity [Line Items]
Outstanding concentration of risk	1
From PR Central Government | After 5 to 10 years | Loans
Direct Exposure To The Puerto Rico Government By Maturity [Line Items]
Outstanding concentration of risk	0
From PR Central Government | After 10 years
Direct Exposure To The Puerto Rico Government By Maturity [Line Items]
Outstanding concentration of risk	30
Total concentration of risk	30
From PR Central Government | After 10 years | Investment Portfolio
Direct Exposure To The Puerto Rico Government By Maturity [Line Items]
Outstanding concentration of risk	30
From PR Central Government | After 10 years | Loans
Direct Exposure To The Puerto Rico Government By Maturity [Line Items]
Outstanding concentration of risk	0
From Municipalities
Direct Exposure To The Puerto Rico Government By Maturity [Line Items]
Outstanding concentration of risk	323,845
Total concentration of risk	352,845
From Municipalities | Investment Portfolio
Direct Exposure To The Puerto Rico Government By Maturity [Line Items]
Outstanding concentration of risk	21,560
From Municipalities | Loans
Direct Exposure To The Puerto Rico Government By Maturity [Line Items]
Outstanding concentration of risk	302,285
From Municipalities | Within 1 year
Direct Exposure To The Puerto Rico Government By Maturity [Line Items]
Outstanding concentration of risk	24,973
Total concentration of risk	24,973
From Municipalities | Within 1 year | Investment Portfolio
Direct Exposure To The Puerto Rico Government By Maturity [Line Items]
Outstanding concentration of risk	4,730
From Municipalities | Within 1 year | Loans
Direct Exposure To The Puerto Rico Government By Maturity [Line Items]
Outstanding concentration of risk	20,243
From Municipalities | After 1 to 5 years
Direct Exposure To The Puerto Rico Government By Maturity [Line Items]
Outstanding concentration of risk	116,814
Total concentration of risk	145,814
From Municipalities | After 1 to 5 years | Investment Portfolio
Direct Exposure To The Puerto Rico Government By Maturity [Line Items]
Outstanding concentration of risk	15,805
From Municipalities | After 1 to 5 years | Loans
Direct Exposure To The Puerto Rico Government By Maturity [Line Items]
Outstanding concentration of risk	101,009
From Municipalities | After 5 to 10 years
Direct Exposure To The Puerto Rico Government By Maturity [Line Items]
Outstanding concentration of risk	132,227
Total concentration of risk	132,227
From Municipalities | After 5 to 10 years | Investment Portfolio
Direct Exposure To The Puerto Rico Government By Maturity [Line Items]
Outstanding concentration of risk	1,025
From Municipalities | After 5 to 10 years | Loans
Direct Exposure To The Puerto Rico Government By Maturity [Line Items]
Outstanding concentration of risk	131,202
From Municipalities | After 10 years
Direct Exposure To The Puerto Rico Government By Maturity [Line Items]
Outstanding concentration of risk	49,831
Total concentration of risk	49,831
From Municipalities | After 10 years | Investment Portfolio
Direct Exposure To The Puerto Rico Government By Maturity [Line Items]
Outstanding concentration of risk	0
From Municipalities | After 10 years | Loans
Direct Exposure To The Puerto Rico Government By Maturity [Line Items]
Outstanding concentration of risk	$ 49,831