| Period | Value | YoY Chg | Change % | Date | Report | Filed |
|---|---|---|---|---|---|---|
| Q4 2023 | $5.1 M | -$700 K | -12.1% | Dec 31, 2023 | 10-K | 2024-02-15 |
| Q4 2022 | $5.8 M | +$1.1 M | +23.4% | Dec 31, 2022 | 10-K | 2024-02-15 |
| Q4 2021 | $4.7 M | -$2.6 M | -35.6% | Dec 31, 2021 | 10-K | 2024-02-15 |
| Q4 2020 | $7.3 M | -$11.6 M | -61.4% | Dec 31, 2020 | 10-K | 2024-02-15 |
| Q4 2019 | $18.9 M | +$14.2 M | +302% | Dec 31, 2019 | 10-K | 2023-02-16 |
| Q4 2018 | $4.7 M | +$4.7 M | Dec 31, 2018 | 10-K | 2022-02-17 | |
| Q4 2017 | $0 | $0 | Dec 31, 2017 | 10-K | 2021-02-18 | |
| Q4 2016 | $0 | $0 | Dec 31, 2016 | 10-K | 2020-02-18 | |
| Q4 2015 | $0 | -$4 M | -100% | Dec 31, 2015 | 10-K | 2019-02-21 |
| Q1 2015 | $4 M | -$1.9 M | -32.2% | Mar 31, 2015 | 10-Q | 2015-05-07 |
| Q4 2014 | $4 M | -$1.9 M | -32.2% | Dec 31, 2014 | 10-K | 2018-02-23 |
| Q3 2014 | $4.4 M | -$5.5 M | -55.6% | Sep 30, 2014 | 10-Q | 2014-11-03 |
| Q2 2014 | $5.9 M | -$3.2 M | -35.2% | Jun 30, 2014 | 10-Q | 2014-08-01 |
| Q1 2014 | $5.9 M | -$3.2 M | -35.2% | Mar 31, 2014 | 10-Q | 2014-05-01 |
| Q4 2013 | $5.9 M | -$3.2 M | -35.2% | Dec 31, 2013 | 10-K | 2017-02-24 |
| Q3 2013 | $9.9 M | +$2.8 M | +39.4% | Sep 30, 2013 | 10-Q | 2013-11-01 |
| Q2 2013 | $9.1 M | +$1.7 M | +23% | Jun 30, 2013 | 10-Q | 2013-08-02 |
| Q1 2013 | $9.1 M | +$1.7 M | +23% | Mar 31, 2013 | 10-Q | 2013-05-02 |
| Q4 2012 | $9.1 M | -$4 M | -30.5% | Dec 31, 2012 | 10-K | 2016-02-19 |
| Q3 2012 | $7.1 M | Sep 30, 2012 | 10-Q | 2012-11-05 | ||
| Q2 2012 | $7.4 M | Jun 30, 2012 | 10-Q | 2012-08-07 | ||
| Q1 2012 | $7.4 M | Mar 31, 2012 | 10-Q | 2012-05-08 | ||
| Q4 2011 | $13.1 M | -$11.5 M | -46.7% | Dec 31, 2011 | 10-K | 2015-02-20 |
| Q4 2010 | $24.6 M | Dec 31, 2010 | 10-K | 2014-02-21 |