Equity Compensation Plans - Options (Details) - USD ($) |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2009 |
Dec. 31, 2021 |
Dec. 31, 2019 |
|
| 2009 Plan | |||
| Equity Compensation Plans | |||
| Granted (in shares) | 16,500 | 0 | |
| Exercised (in shares) | 0 | 4,500 | |
| Shares | |||
| Exercised (in shares) | 0 | (4,500) | |
| Ending outstanding (in shares) | 0 | ||
| Employee and Nonemployee Stock Options [Member] | |||
| Equity Compensation Plans | |||
| Total unrecognized compensation cost | $ 0 | ||
| Aggregate Intrinsic Value | |||
| Exercised (in dollars) | $ (27,000) | ||