| Period | Value | YoY Chg | Change % | Date | Report | Filed |
|---|---|---|---|---|---|---|
| Q4 2022 | $0 | $0 | Dec 31, 2022 | 10-K | 2023-02-27 | |
| Q4 2021 | $0 | -$450K | -100% | Dec 31, 2021 | 10-K | 2023-02-27 |
| Q4 2020 | $450K | $0 | 0% | Dec 31, 2020 | 10-K | 2023-02-27 |
| Q4 2019 | $450K | -$43K | -8.72% | Dec 31, 2019 | 10-K | 2022-02-25 |
| Q4 2018 | $493K | -$372K | -43% | Dec 31, 2018 | 10-K | 2022-02-25 |
| Q4 2017 | $865K | +$865K | Dec 31, 2017 | 10-K | 2021-03-01 | |
| Q4 2016 | $0 | -$120K | -100% | Dec 31, 2016 | 10-K | 2020-03-02 |
| Q4 2015 | $120K | -$9K | -6.98% | Dec 31, 2015 | 10-K | 2019-02-26 |
| Q4 2014 | $129K | -$217K | -62.7% | Dec 31, 2014 | 10-K | 2018-02-27 |
| Q4 2013 | $346K | -$195K | -36% | Dec 31, 2013 | 10-K/A | 2017-03-14 |
| Q4 2012 | $541K | -$720K | -57.1% | Dec 31, 2012 | 10-K | 2016-03-10 |
| Q4 2011 | $1.26M | -$159K | -11.2% | Dec 31, 2011 | 10-K | 2015-03-13 |
| Q4 2010 | $1.42M | Dec 31, 2010 | 10-K | 2014-03-14 |