Securities - Amortized Cost and Fair Value (Details)
$ in Thousands |
12 Months Ended |
|
|
Dec. 31, 2021
USD ($)
item
|
Dec. 31, 2020
USD ($)
|
| Securities Available-for-Sale |
|
|
| Amortized Cost |
$ 1,677,016
|
$ 471,961
|
| Gross Unrealized Gains |
20,587
|
26,735
|
| Gross Unrealized Losses |
(5,115)
|
(2,518)
|
| Debt Securities, Available-for-sale, Total |
1,692,488
|
496,178
|
| Accrued interest receivable |
4,300
|
2,700
|
| FHLB and FRB Stock |
|
|
| FHLBC stock |
7,100
|
3,700
|
| FRB stock |
6,200
|
6,200
|
| Securities pledged to secure deposits and for other purposes |
501,300
|
335,800
|
| Other disclosures |
|
|
| Debt Securities, Available-for-sale, Total |
$ 1,692,488
|
496,178
|
| Number of securities issued from originators |
0
|
|
| Number of originators | item |
1
|
|
| Minimum percentage of securities investment |
10.00%
|
|
| Reimbursement requests greater than 5 % |
|
|
| Other disclosures |
|
|
| Percentage of outstanding principal amount of loans guaranteed by US Department of Education |
85
|
|
| Percent of insured loan |
5
|
|
| Reimbursement requests greater than 9 % |
|
|
| Other disclosures |
|
|
| Percentage of outstanding principal amount of loans guaranteed by US Department of Education |
75
|
|
| Percent of insured loan |
9
|
|
| US Treasury Securities |
|
|
| Securities Available-for-Sale |
|
|
| Amortized Cost |
$ 202,251
|
4,014
|
| Gross Unrealized Gains |
125
|
103
|
| Gross Unrealized Losses |
(37)
|
|
| Debt Securities, Available-for-sale, Total |
202,339
|
4,117
|
| Other disclosures |
|
|
| Debt Securities, Available-for-sale, Total |
202,339
|
4,117
|
| US Government Corporations and Agencies Securities |
|
|
| Securities Available-for-Sale |
|
|
| Amortized Cost |
62,587
|
6,811
|
| Gross Unrealized Losses |
(699)
|
(154)
|
| Debt Securities, Available-for-sale, Total |
61,888
|
6,657
|
| Other disclosures |
|
|
| Debt Securities, Available-for-sale, Total |
61,888
|
6,657
|
| U.S. government agencies mortgage-backed |
|
|
| Securities Available-for-Sale |
|
|
| Amortized Cost |
172,016
|
16,098
|
| Gross Unrealized Gains |
856
|
1,112
|
| Gross Unrealized Losses |
(570)
|
(1)
|
| Debt Securities, Available-for-sale, Total |
172,302
|
17,209
|
| Other disclosures |
|
|
| Debt Securities, Available-for-sale, Total |
172,302
|
17,209
|
| States and political subdivisions |
|
|
| Securities Available-for-Sale |
|
|
| Amortized Cost |
240,793
|
229,352
|
| Gross Unrealized Gains |
16,344
|
21,269
|
| Gross Unrealized Losses |
(672)
|
(1,362)
|
| Debt Securities, Available-for-sale, Total |
256,465
|
249,259
|
| Other disclosures |
|
|
| Debt Securities, Available-for-sale, Total |
256,465
|
249,259
|
| Corporate bonds |
|
|
| Securities Available-for-Sale |
|
|
| Amortized Cost |
10,000
|
|
| Gross Unrealized Losses |
(113)
|
|
| Debt Securities, Available-for-sale, Total |
9,887
|
|
| Other disclosures |
|
|
| Debt Securities, Available-for-sale, Total |
9,887
|
|
| Collateralized loan obligations |
|
|
| Securities Available-for-Sale |
|
|
| Amortized Cost |
673,238
|
53,999
|
| Gross Unrealized Gains |
2,014
|
2,866
|
| Gross Unrealized Losses |
(2,285)
|
(280)
|
| Debt Securities, Available-for-sale, Total |
672,967
|
56,585
|
| Other disclosures |
|
|
| Debt Securities, Available-for-sale, Total |
672,967
|
56,585
|
| Asset-backed Securities |
|
|
| Securities Available-for-Sale |
|
|
| Amortized Cost |
236,293
|
130,959
|
| Gross Unrealized Gains |
1,245
|
1,370
|
| Gross Unrealized Losses |
(661)
|
(511)
|
| Debt Securities, Available-for-sale, Total |
236,877
|
131,818
|
| Other disclosures |
|
|
| Debt Securities, Available-for-sale, Total |
236,877
|
131,818
|
| FFEL |
|
|
| Securities Available-for-Sale |
|
|
| Debt Securities, Available-for-sale, Total |
194,400
|
|
| Other disclosures |
|
|
| Debt Securities, Available-for-sale, Total |
$ 194,400
|
|
| Percentage of outstanding principal amount of loans guaranteed by US Department of Education |
97
|
|
| Collateralized loan obligations. |
|
|
| Securities Available-for-Sale |
|
|
| Amortized Cost |
$ 79,838
|
30,728
|
| Gross Unrealized Gains |
3
|
15
|
| Gross Unrealized Losses |
(78)
|
(210)
|
| Debt Securities, Available-for-sale, Total |
79,763
|
30,533
|
| Other disclosures |
|
|
| Debt Securities, Available-for-sale, Total |
$ 79,763
|
$ 30,533
|
| Loan receivables | GCO Education Loan Funding Corp | Customer Concentration Risk |
|
|
| Other disclosures |
|
|
| Percentage of concentration risk |
1.00%
|
|