Employee benefit plans (Details)
|
|
12 Months Ended |
|
Jun. 28, 2016 |
Dec. 31, 2020
USD ($)
shares
|
Dec. 31, 2019
USD ($)
shares
|
Dec. 31, 2018
USD ($)
|
Dec. 31, 2014
USD ($)
$ / shares
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
|
|
|
| Discretionary contribution percentage |
|
|
50.00%
|
25.00%
|
|
| Maximum percentage of amount to be contributed by the employer |
|
|
6.00%
|
6.00%
|
|
| Matching and profit sharing vesting period |
|
|
3 years
|
5 years
|
|
| Contribution provided by the bank to the plan |
|
$ 3,198,000
|
$ 2,325,000
|
$ 2,211,000
|
|
| Post retirement benefits payable |
|
1,112,000
|
1,315,000
|
|
|
| Expense related to plans |
|
29,000
|
1,000
|
4,000
|
|
| Payments to participants |
|
131,000
|
150,000
|
191,000
|
|
| Cash surrender value on bank owned life insurance |
|
71,977,000
|
11,357,000
|
|
|
| Cash value income |
|
1,556,000
|
240,000
|
158,000
|
|
| Deferred compensation |
|
2,261,000
|
1,718,000
|
|
|
| Salaries, commissions and employee benefits |
|
$ 233,768,000
|
152,084,000
|
136,892,000
|
|
| 2012 EBI Plan |
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|
|
|
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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|
|
|
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| Grants authorized under the plan (in shares) | shares |
|
0
|
|
|
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| Deferred Compensation Plans and Agreements |
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|
|
|
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
|
|
|
| Payments to participants |
|
|
1,191,000
|
1,818,000
|
|
| Liability for cash-settled awards |
|
|
$ 993,000
|
|
|
| Number of units remaining in equity based incentive plan for cash settlement | shares |
|
|
29,172
|
|
|
| Salaries, commissions and employee benefits |
|
|
$ 484,000
|
$ 3,787,000
|
|
| Deferred Compensation Plans and Agreements | 2012 EBI Plan |
|
|
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
|
|
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| Stock split ratio |
100
|
|
|
|
|
| Deferred Compensation Plans and Agreements | Chief Executive Officer |
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|
|
|
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
|
|
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| Stock split ratio |
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|
1
|
|
|
| Deferred compensation |
|
|
$ 3,000,000
|
|
$ 3,000,000
|
| Deferred stock units issued (in shares) | shares |
|
0
|
157,895
|
|
|
| IPO price (USD per share) | $ / shares |
|
|
|
|
$ 19.00
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