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Stock-based Compensation and Benefits - Narrative (Details) - USD ($) | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2023 | Sep. 30, 2022 | Sep. 30, 2023 | Sep. 30, 2022
Employee Stock Option [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Contractual term (in years) |  |  | 10 years |
Stock based compensation expense | $ 100,000 | $ 100,000 | $ 800,000 | $ 600,000
Unrecognized compensation expense | 600,000 |  | $ 600,000 |
Unrecognized compensation cost, weighted-average period, years |  |  | 2 years 2 months 12 days |
Employee Stock Option [Member] | NBH Holdings Corp. 2014 Omnibus Incentive Plan [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Award Vesting Rights, Percentage |  |  | 33.30% |
Restricted Stock [Member] | NBH Holdings Corp. 2014 Omnibus Incentive Plan [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Stock based compensation expense | 1,200,000 | 900,000 | $ 3,200,000 | 2,500,000
Unrecognized compensation expense | 5,600,000 |  | $ 5,600,000 |
Unrecognized compensation cost, weighted-average period, years |  |  | 2 years 2 months 12 days |
Performance stock units | NBH Holdings Corp. 2014 Omnibus Incentive Plan [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Stock based compensation expense | 400,000 | $ 400,000 | $ 1,300,000 | $ 1,200,000
Unrecognized compensation expense | $ 3,400,000 |  | $ 3,400,000 |
Unrecognized compensation cost, weighted-average period, years |  |  | 1 year 10 months 24 days |
Performance period |  |  | 3 years |
Performance stock units | NBH Holdings Corp. 2014 Omnibus Incentive Plan [Member] | EPS target |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Percentage of awards based on performance type |  |  | 60.00% |
Performance stock units | NBH Holdings Corp. 2014 Omnibus Incentive Plan [Member] | TSR target |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Percentage of awards based on performance type |  |  | 40.00% |
Employee Stock [Member] | Employee Stock Purchase Plan 2014 [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Maximum stock purchases by employees, value |  |  | $ 25,000 |
Maximum stock purchases by employees (in shares) |  |  | 2,000 |
Discount on purchase of common stock (as a percent) |  |  | 90.00% |
Offering period for employee stock purchases |  |  | 6 months |
Number of shares authorized | 400,000 |  | 400,000 |
Shares available for issuance | 235,919 |  | 235,919 |
Employees purchased shares (in shares) |  |  | 26,563 | 19,414
Minimum [Member] | Employee Stock Option [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Vesting period |  |  | 1 year |
Minimum [Member] | Restricted Stock [Member] | NBH Holdings Corp. 2014 Omnibus Incentive Plan [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Vesting period |  |  | 1 year |
Minimum [Member] | Performance stock units | NBH Holdings Corp. 2014 Omnibus Incentive Plan [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Percentage of initial target awards |  |  | 0.00% |
Maximum [Member] | Employee Stock Option [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Vesting period |  |  | 4 years |
Maximum [Member] | Restricted Stock [Member] | NBH Holdings Corp. 2014 Omnibus Incentive Plan [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Vesting period |  |  | 3 years |
Maximum [Member] | Performance stock units | NBH Holdings Corp. 2014 Omnibus Incentive Plan [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Percentage of initial target awards |  |  | 150.00% |

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