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Capital Transactions - Narrative (Details) - USD ($) | 3 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | ---
Mar. 31, 2020 | Mar. 31, 2019 | Dec. 31, 2015 | Dec. 31, 2019 | Dec. 31, 2012
2012 Stock Incentive Plan |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Number of shares authorized under the plan (in shares) |  |  |  |  | 1,500,000
Additional number of shares authorized under the plan (in shares) |  |  | 1,500,000 |  |
Number of shares granted (in shares) | 0 |  |  |  |
Maximum | 2009 Incentive Plan |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Number of shares authorized under the plan (in shares) | 400,000 |  |  |  |
Stock options |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Aggregate intrinsic value, outstanding | $ 100,000 |  |  | $ 100,000 |
Options outstanding (in shares) | 290,000 |  |  | 290,000 |
Time-based stock options |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Share-based compensation expense | $ 0 | $ 0 |  |  |
Unrecognized share-based compensation expense | $ 0 |  |  | $ 0 |
Time-based stock options | Maximum |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Vesting period | 48 months |  |  |  |
Performance based stock options operating income margins |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Operating income margin, one (as a percent) | 6.00% |  |  |  |
Operating income margin, two (as a percent) | 8.00% |  |  |  |
Operating income margin, three (as a percent) | 10.00% |  |  |  |
Unvested stock options outstanding (in shares) | 0 |  |  | 0 |
Performance based stock options operating income margins | Minimum |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Award performance period | 1 year |  |  |  |
Performance based stock options operating income margins | Maximum |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Award performance period | 1 year 3 months |  |  |  |
RSUs |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Share-based compensation expense | $ 300,000 | $ 100,000 |  |  |
Unrecognized share-based compensation expense | $ 2,500,000 |  |  | $ 1,100,000 |
Discount for lack of marketability | 13.40% |  |  |  |
Award performance period | 3 years |  |  |  |
Expected volatility (as a percent) | 50.00% |  |  |  |
Weighted-average period over which the remaining compensation cost is expected to be recognized | 1 year 1 month 6 days |  |  |  |
Minimum withholding requirements (in shares) | 22,000 | 11,000 |  |  |
RSUs | 2012 Stock Incentive Plan |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Granted (in shares) | 630,000 |  |  |  |
RSUs | Minimum |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Risk-free interest rate (as a percent) | 2.10% |  |  |  |
RSUs | Minimum | 2012 Stock Incentive Plan |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Vesting period | 12 months |  |  |  |
RSUs | Maximum |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Risk-free interest rate (as a percent) | 2.90% |  |  |  |
RSUs | Maximum | 2012 Stock Incentive Plan |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Vesting period | 36 months |  |  |  |
RSUs | Director | 2012 Stock Incentive Plan |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Restriction period for issuance of shares | two years |  |  |  |
Nonvested subject to restriction period (in shares) | 91,000 |  |  | 95,000 |
Time-Based Restricted Stock Units (RSUs) | 2012 Stock Incentive Plan |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Weighted-average grant date fair value (in dollars per share) | $ 7.83 |  |  |  |
Time-Based Restricted Stock Units (RSUs) | Minimum | 2012 Stock Incentive Plan |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Vesting period | 1 year |  |  |  |
Time-Based Restricted Stock Units (RSUs) | Maximum | 2012 Stock Incentive Plan |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Vesting period | 3 years |  |  |  |
Performance-Based Restricted Stock Units (RSUs) |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Share-based compensation expense | $ 100,000 | $ 100,000 |  |  |
Share based compensation potential compensation expense to be recognized | $ 1,500,000 |  |  |  |
Performance-Based Restricted Stock Units (RSUs) | 2012 Stock Incentive Plan |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Vesting period | 3 years |  |  |  |
Weighted-average grant date fair value (in dollars per share) | $ 4.51 |  |  |  |
Performance-Based Restricted Stock Units (RSUs) | Maximum |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Share based compensation potential compensation expense to be recognized | $ 3,700,000 |  |  |  |

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