Commitments and Contingencies - Schedule of Direct Exposure to Puerto Rico Government by Maturity (Details) - PR Government direct exposure - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2022	Dec. 31, 2021
Direct exposure to the puerto rico government by maturity
Outstanding concentration of risk	$ 322,217	$ 349,000
Total concentration of risk	365,406	367,000
Investment Portfolio
Direct exposure to the puerto rico government by maturity
Outstanding concentration of risk	24,702	30,000
Loans
Direct exposure to the puerto rico government by maturity
Outstanding concentration of risk	297,515	$ 319,000
From PR Central Government
Direct exposure to the puerto rico government by maturity
Outstanding concentration of risk	42
Total concentration of risk	42
From PR Central Government | Investment Portfolio
Direct exposure to the puerto rico government by maturity
Outstanding concentration of risk	42
From PR Central Government | Loans
Direct exposure to the puerto rico government by maturity
Outstanding concentration of risk	0
From PR Central Government | After 1 to 5 years
Direct exposure to the puerto rico government by maturity
Outstanding concentration of risk	13
Total concentration of risk	13
From PR Central Government | After 1 to 5 years | Investment Portfolio
Direct exposure to the puerto rico government by maturity
Outstanding concentration of risk	13
From PR Central Government | After 1 to 5 years | Loans
Direct exposure to the puerto rico government by maturity
Outstanding concentration of risk	0
From PR Central Government | After 5 to 10 years
Direct exposure to the puerto rico government by maturity
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
Outstanding concentration of risk	1
From PR Central Government | After 5 to 10 years | Loans
Direct exposure to the puerto rico government by maturity
Outstanding concentration of risk	0
From PR Central Government | After 10 years
Direct exposure to the puerto rico government by maturity
Outstanding concentration of risk	28
Total concentration of risk	28
From PR Central Government | After 10 years | Investment Portfolio
Direct exposure to the puerto rico government by maturity
Outstanding concentration of risk	28
From PR Central Government | After 10 years | Loans
Direct exposure to the puerto rico government by maturity
Outstanding concentration of risk	0
From Municipalities
Direct exposure to the puerto rico government by maturity
Outstanding concentration of risk	322,175
Total concentration of risk	365,364
From Municipalities | Investment Portfolio
Direct exposure to the puerto rico government by maturity
Outstanding concentration of risk	24,660
From Municipalities | Loans
Direct exposure to the puerto rico government by maturity
Outstanding concentration of risk	297,515
From Municipalities | Within 1 year
Direct exposure to the puerto rico government by maturity
Outstanding concentration of risk	28,148
Total concentration of risk	46,337
From Municipalities | Within 1 year | Investment Portfolio
Direct exposure to the puerto rico government by maturity
Outstanding concentration of risk	4,530
From Municipalities | Within 1 year | Loans
Direct exposure to the puerto rico government by maturity
Outstanding concentration of risk	23,618
From Municipalities | After 1 to 5 years
Direct exposure to the puerto rico government by maturity
Outstanding concentration of risk	119,881
Total concentration of risk	144,881
From Municipalities | After 1 to 5 years | Investment Portfolio
Direct exposure to the puerto rico government by maturity
Outstanding concentration of risk	19,105
From Municipalities | After 1 to 5 years | Loans
Direct exposure to the puerto rico government by maturity
Outstanding concentration of risk	100,776
From Municipalities | After 5 to 10 years
Direct exposure to the puerto rico government by maturity
Outstanding concentration of risk	124,315
Total concentration of risk	124,315
From Municipalities | After 5 to 10 years | Investment Portfolio
Direct exposure to the puerto rico government by maturity
Outstanding concentration of risk	1,025
From Municipalities | After 5 to 10 years | Loans
Direct exposure to the puerto rico government by maturity
Outstanding concentration of risk	123,290
From Municipalities | After 10 years
Direct exposure to the puerto rico government by maturity
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
Outstanding concentration of risk	0
From Municipalities | After 10 years | Loans
Direct exposure to the puerto rico government by maturity
Outstanding concentration of risk	$ 49,831