Segment reporting - Narrative (Details)
$ in Thousands |
12 Months Ended |
|
Dec. 31, 2020
USD ($)
segment
|
Dec. 31, 2019
USD ($)
|
Dec. 31, 2018
USD ($)
|
| Segment Reporting Information [Line Items] |
|
|
|
| Number of reportable segments | segment |
2
|
|
|
| Other noninterest expense |
$ 213,945
|
$ 146,653
|
$ 121,200
|
| Relief of goodwill due to sale of TPO mortgage delivery channel |
0
|
100
|
0
|
| Total net contribution reclassification from segment realignment |
82,461
|
109,539
|
105,854
|
| Banking |
|
|
|
| Segment Reporting Information [Line Items] |
|
|
|
| Other noninterest expense |
212,890
|
144,658
|
121,200
|
| Total net contribution reclassification from segment realignment |
(20,497)
|
99,859
|
100,888
|
| Banking | Segment Realignment, Reclassification, Adjustment |
|
|
|
| Segment Reporting Information [Line Items] |
|
|
|
| Total net contribution reclassification from segment realignment |
(26,416)
|
(7,213)
|
(3,789)
|
| Mortgage |
|
|
|
| Segment Reporting Information [Line Items] |
|
|
|
| Other noninterest expense |
1,055
|
1,995
|
0
|
| Relief of goodwill due to sale of TPO mortgage delivery channel |
|
100
|
|
| Total net contribution reclassification from segment realignment |
102,958
|
9,680
|
4,966
|
| Interest paid |
14,810
|
11,183
|
16,057
|
| Mortgage | Segment Realignment, Reclassification, Adjustment |
|
|
|
| Segment Reporting Information [Line Items] |
|
|
|
| Total net contribution reclassification from segment realignment |
$ 26,416
|
$ 7,213
|
$ 3,789
|
| Mortgage | Prime Interest Rate |
|
|
|
| Segment Reporting Information [Line Items] |
|
|
|
| Warehouse line of credit interest rate |
3.25%
|
4.75%
|
|