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Stock-Based Incentive Plan - Narrative (Details) - USD ($) | 1 Months Ended | 3 Months Ended | 6 Months Ended |
--- | --- | --- | --- | ---
Jul. 31, 2019 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 08, 2016
Restricted Stock and Contingent Restricted Stock |  |  |  |  |  |
Stock-Based Incentive Plan |  |  |  |  |  |
Stock-based compensation expense |  | $ 236,190 | $ 254,111 | $ 568,203 | $ 469,484 |
Restricted Stock, Service-Based |  |  |  |  |  |
Stock-Based Incentive Plan |  |  |  |  |  |
Granted (in shares) |  |  |  | 157,386 |  |
Restricted Stock, Market-Based |  |  |  |  |  |
Stock-Based Incentive Plan |  |  |  |  |  |
Granted (in shares) |  |  |  | 104,236 |  |
2016 Plan |  |  |  |  |  |
Stock-Based Incentive Plan |  |  |  |  |  |
Number of shares remaining available for grant under plan (in shares) |  | 390,489 |  | 390,489 |  | 0
Number of shares of common stock authorized for issuance under plan (in shares) |  |  |  |  |  | 1,100,000
2004 Stock Plan | Restricted Stock and Contingent Restricted Stock, Other |  |  |  |  |  |
Stock-Based Incentive Plan |  |  |  |  |  |
Vesting period |  |  |  | 1 year |  |
2004 Stock Plan | Restricted Stock, Performance-Based |  |  |  |  |  |
Stock-Based Incentive Plan |  |  |  |  |  |
Performance based awards, outstanding (in shares) |  | 0 |  | 0 |  |
Minimum | 2004 Stock Plan | Restricted Stock, Service-Based |  |  |  |  |  |
Stock-Based Incentive Plan |  |  |  |  |  |
Vesting period |  |  |  | 3 years |  |
Minimum | 2004 Stock Plan | Restricted Stock, Market-Based |  |  |  |  |  |
Stock-Based Incentive Plan |  |  |  |  |  |
Vesting period |  |  |  | 2 years |  |
Maximum | 2004 Stock Plan | Restricted Stock and Contingent Restricted Stock |  |  |  |  |  |
Stock-Based Incentive Plan |  |  |  |  |  |
Expiration period |  |  |  | 4 years |  |
Maximum | 2004 Stock Plan | Restricted Stock, Service-Based |  |  |  |  |  |
Stock-Based Incentive Plan |  |  |  |  |  |
Vesting period |  |  |  | 4 years |  |
Maximum | 2004 Stock Plan | Restricted Stock, Market-Based |  |  |  |  |  |
Stock-Based Incentive Plan |  |  |  |  |  |
Vesting period |  |  |  | 3 years |  |
Chief Executive Officer | 2004 Stock Plan | Restricted Stock, Service-Based |  |  |  |  |  |
Stock-Based Incentive Plan |  |  |  |  |  |
Granted (in shares) | 48,872 |  |  |  |  |
Chief Executive Officer | 2004 Stock Plan | Restricted Stock, Market-Based |  |  |  |  |  |
Stock-Based Incentive Plan |  |  |  |  |  |
Granted (in shares) | 200,000 |  |  |  |  |
Employee | Restricted Stock, Service-Based |  |  |  |  |  |
Stock-Based Incentive Plan |  |  |  |  |  |
Granted (in shares) |  |  |  | 52,119 |  |
Employee | Restricted Stock, Market-Based |  |  |  |  |  |
Stock-Based Incentive Plan |  |  |  |  |  |
Granted (in shares) |  |  |  | 104,236 |  |
Director | Restricted Stock, Service-Based |  |  |  |  |  |
Stock-Based Incentive Plan |  |  |  |  |  |
Granted (in shares) |  |  |  | 56,395 |  |

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