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Tealstone Acquisition - Narrative (Details) - USD ($) | Apr. 03, 2020 | Apr. 03, 2019 | Apr. 03, 2017 | Dec. 31, 2017 | Dec. 31, 2016
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Business Acquisition [Line Items] |  |  |  |  |
Goodwill |  |  |  | $ 85,231,000 | $ 54,820,000
Tealstone |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Percentage of outstanding stock |  |  | 100.00% |  |
Cash, net of cash acquired |  |  | $ 54,861,000 |  |
Stock issued for Tealstone acquisition (in shares) |  |  | 1,882,058 |  |
Promissory notes issued to the sellers |  |  | $ 5,000,000 |  |
Business combination, contingent consideration, liability |  |  | 15,000,000 |  |
Business combination, consideration transferred |  |  | $ 83,511,000 |  |
Fair value inputs, discount rate |  |  | 12.00% |  |
Goodwill |  |  | $ 30,411,000 |  |
Tealstone | Scenario, Forecast |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Cash, net of cash acquired | $ 7,500,000 | $ 2,426,000 |  |  |

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