| Period | Value | YoY Chg | Change % | Date | Report | Filed |
|---|---|---|---|---|---|---|
| Q4 2023 | $24.1M | +$8.9M | +58.6% | Dec 31, 2023 | 10-K | 2024-02-21 |
| Q4 2022 | $15.2M | +$11.6M | +322% | Dec 31, 2022 | 10-K | 2024-02-21 |
| Q4 2021 | $3.6M | -$900K | -20% | Dec 31, 2021 | 10-K | 2024-02-21 |
| Q4 2020 | $4.5M | +$4.5M | Dec 31, 2020 | 10-K | 2024-02-21 | |
| Q3 2020 | $0 | -$900K | -100% | Sep 30, 2020 | 10-Q | 2020-10-28 |
| Q2 2020 | $0 | -$900K | -100% | Jun 30, 2020 | 10-Q | 2020-07-29 |
| Q1 2020 | $0 | -$500K | -100% | Mar 31, 2020 | 10-Q | 2020-04-29 |
| Q4 2019 | $0 | -$500K | -100% | Dec 31, 2019 | 10-K | 2023-02-22 |
| Q3 2019 | $900K | $0 | 0% | Sep 30, 2019 | 10-Q | 2019-10-30 |
| Q2 2019 | $900K | +$400K | +80% | Jun 30, 2019 | 10-Q | 2019-07-31 |
| Q1 2019 | $500K | $0 | 0% | Mar 31, 2019 | 10-Q | 2019-05-01 |
| Q4 2018 | $500K | $0 | 0% | Dec 31, 2018 | 10-K | 2022-02-24 |
| Q3 2018 | $900K | +$400K | +80% | Sep 30, 2018 | 10-Q | 2019-10-30 |
| Q2 2018 | $500K | $0 | 0% | Jun 30, 2018 | 10-Q | 2019-07-31 |
| Q1 2018 | $500K | $0 | 0% | Mar 31, 2018 | 10-Q | 2019-05-01 |
| Q4 2017 | $500K | $0 | 0% | Dec 31, 2017 | 10-K | 2021-02-24 |
| Q3 2017 | $500K | $0 | 0% | Sep 30, 2017 | 10-Q | 2018-10-31 |
| Q2 2017 | $500K | $0 | 0% | Jun 30, 2017 | 10-Q | 2018-08-01 |
| Q1 2017 | $500K | $0 | 0% | Mar 31, 2017 | 10-Q | 2018-05-02 |
| Q4 2016 | $500K | $0 | 0% | Dec 31, 2016 | 10-K | 2018-02-21 |
| Q3 2016 | $500K | Sep 30, 2016 | 10-Q | 2017-10-25 | ||
| Q2 2016 | $500K | Jun 30, 2016 | 10-Q | 2017-07-27 | ||
| Q1 2016 | $500K | Mar 31, 2016 | 10-Q | 2017-04-26 | ||
| Q4 2015 | $500K | -$900K | -64.3% | Dec 31, 2015 | 10-K | 2017-02-22 |
| Q4 2014 | $1.4M | -$1.44M | -50.6% | Dec 31, 2014 | 10-K | 2017-02-22 |
| Q4 2013 | $2.84M | +$1.33M | +87.7% | Dec 31, 2013 | 10-K | 2016-02-25 |
| Q4 2012 | $1.51M | -$222K | -12.8% | Dec 31, 2012 | 10-K | 2016-02-25 |
| Q4 2011 | $1.73M | -$5.67M | -76.6% | Dec 31, 2011 | 10-K | 2015-02-24 |
| Q4 2010 | $7.41M | Dec 31, 2010 | 10-K | 2014-02-25 |