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v3.20.1

Revisions of Prior Period Financial Statements (Revised Consolidated Statements of Stockholders' Equity) (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Dec. 31, 2019 | Sep. 30, 2019 | Jun. 30, 2019 | Mar. 31, 2019 | Dec. 31, 2018 | Sep. 30, 2018 | Jun. 30, 2018 | Mar. 31, 2018 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Error Corrections and Prior Period Adjustments Restatement [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Net income (loss) | $ (1,710) | $ (12,579) | $ 327 | $ 98 | $ (749) | $ (118) | $ 211 | $ 190 | $ (13,864) | $ (466) | $ 19,794 |
Retained earnings | 137,478 |  |  |  | 151,342 |  |  |  | 137,478 | 151,342 | 151,808 |
Total stockholders' equity | $ 247,693 |  |  |  | 259,232 |  |  |  | 247,693 | 259,232 | 257,262 | $ 232,954
As Reported |  |  |  |  |  |  |  |  |  |  |  |
Error Corrections and Prior Period Adjustments Restatement [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Net income (loss) |  | (12,232) | 573 | 357 | (282) | 236 | 247 | 225 |  | 426 | 19,851 |
Retained earnings |  |  |  |  | 152,291 |  |  |  |  | 152,291 | 151,865 |
Total stockholders' equity |  |  |  |  | 260,181 |  |  |  |  | 260,181 | 257,319 |
Revisions | Revision Of Prior Period Financial Statements |  |  |  |  |  |  |  |  |  |  |  |
Error Corrections and Prior Period Adjustments Restatement [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Net income (loss) |  | $ (347) | $ (246) | $ (259) | (467) | $ (354) | $ (36) | $ (35) | $ 1,130 | (892) | (57) |
Retained earnings |  |  |  |  | (949) |  |  |  |  | (949) | (57) |
Total stockholders' equity |  |  |  |  | $ (949) |  |  |  |  | $ (949) | $ (57) |

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