| Period | Value | YoY Chg | Change % | Date | Report | Filed |
|---|---|---|---|---|---|---|
| Q4 2022 | $0 | $0 | Dec 31, 2022 | 10-K | 2023-02-27 | |
| Q4 2021 | $0 | -$17K | -100% | Dec 31, 2021 | 10-K | 2023-02-27 |
| Q4 2020 | $17K | -$120K | -87.6% | Dec 31, 2020 | 10-K | 2023-02-27 |
| Q4 2019 | $137K | -$191K | -58.2% | Dec 31, 2019 | 10-K | 2023-02-27 |
| Q4 2018 | $328K | -$202K | -38.1% | Dec 31, 2018 | 10-K | 2022-02-28 |
| Q4 2017 | $530K | -$327K | -38.2% | Dec 31, 2017 | 10-K | 2021-03-05 |
| Q4 2016 | $857K | -$362K | -29.7% | Dec 31, 2016 | 10-K | 2020-03-16 |
| Q4 2015 | $1.22M | -$740K | -37.8% | Dec 31, 2015 | 10-K | 2019-03-04 |
| Q4 2014 | $1.96M | -$59K | -2.92% | Dec 31, 2014 | 10-K | 2018-03-05 |
| Q4 2013 | $2.02M | -$309K | -13.3% | Dec 31, 2013 | 10-K | 2017-03-01 |
| Q4 2012 | $2.33M | +$775K | +49.9% | Dec 31, 2012 | 10-K | 2016-03-04 |
| Q4 2011 | $1.55M | -$297K | -16.1% | Dec 31, 2011 | 10-K | 2015-03-02 |
| Q4 2010 | $1.85M | Dec 31, 2010 | 10-K | 2014-03-03 |