| Period | Value | YoY Chg | Change % | Date | Report | Filed |
|---|---|---|---|---|---|---|
| Q1 2024 | 5.94 M | -292 K | -4.69% | Mar 31, 2024 | 10-K | 2024-05-23 |
| Q4 2023 | 6.07 M | -155 K | -2.49% | Dec 31, 2023 | 10-Q | 2024-02-07 |
| Q3 2023 | 6.25 M | -34.9 K | -0.56% | Sep 30, 2023 | 10-Q | 2023-11-03 |
| Q2 2023 | 6.24 M | -40.2 K | -0.64% | Jun 30, 2023 | 10-Q | 2023-08-03 |
| Q1 2023 | 6.23 M | -117 K | -1.85% | Mar 31, 2023 | 10-K | 2024-05-23 |
| Q4 2022 | 6.23 M | -408 K | -6.16% | Dec 31, 2022 | 10-Q | 2023-02-03 |
| Q3 2022 | 6.28 M | -442 K | -6.58% | Sep 30, 2022 | 10-Q | 2022-11-04 |
| Q2 2022 | 6.28 M | -413 K | -6.17% | Jun 30, 2022 | 10-Q | 2022-08-05 |
| Q1 2022 | 6.35 M | -457 K | -6.72% | Mar 31, 2022 | 10-K | 2023-06-01 |
| Q4 2021 | 6.64 M | -129 K | -1.9% | Dec 31, 2021 | 10-Q | 2022-02-04 |
| Q3 2021 | 6.72 M | -278 K | -3.97% | Sep 30, 2021 | 10-Q | 2021-11-05 |
| Q2 2021 | 6.69 M | -758 K | -10.2% | Jun 30, 2021 | 10-Q | 2021-08-06 |
| Q1 2021 | 6.81 M | -1 M | -12.8% | Mar 31, 2021 | 10-K | 2022-05-27 |
| Q4 2020 | 6.77 M | -1.17 M | -14.7% | Dec 31, 2020 | 10-Q | 2021-02-05 |
| Q3 2020 | 7 M | -944 K | -11.9% | Sep 30, 2020 | 10-Q | 2020-11-06 |
| Q2 2020 | 7.45 M | -1.73 M | -18.8% | Jun 30, 2020 | 10-Q/A | 2020-08-14 |
| Q1 2020 | 7.81 M | -1.48 M | -15.9% | Mar 31, 2020 | 10-K | 2021-06-02 |
| Q4 2019 | 7.93 M | -1.91 M | -19.4% | Dec 31, 2019 | 10-Q | 2020-02-10 |
| Q3 2019 | 7.95 M | -1.21 M | -13.2% | Sep 30, 2019 | 10-Q | 2019-11-07 |
| Q2 2019 | 9.18 M | +41 K | +0.45% | Jun 30, 2019 | 10-Q | 2019-08-07 |
| Q1 2019 | 9.28 M | +165 K | +1.81% | Mar 31, 2019 | 10-K | 2020-05-29 |
| Q4 2018 | 9.84 M | +971 K | +10.9% | Dec 31, 2018 | 10-Q | 2019-02-11 |
| Q3 2018 | 9.15 M | +313 K | +3.54% | Sep 30, 2018 | 10-Q | 2018-11-08 |
| Q2 2018 | 9.14 M | +324 K | +3.68% | Jun 30, 2018 | 10-Q | 2018-08-09 |
| Q1 2018 | 9.12 M | +336 K | +3.83% | Mar 31, 2018 | 10-K | 2019-05-24 |
| Q4 2017 | 8.87 M | +86.6 K | +0.99% | Dec 31, 2017 | 10-Q | 2018-02-06 |
| Q3 2017 | 8.84 M | +47.4 K | +0.54% | Sep 30, 2017 | 10-Q | 2017-11-08 |
| Q2 2017 | 8.82 M | +27.8 K | +0.32% | Jun 30, 2017 | 10-Q | 2017-08-08 |
| Q1 2017 | 8.78 M | -29.3 K | -0.33% | Mar 31, 2017 | 10-K | 2018-06-13 |
| Q4 2016 | 8.78 M | -82 K | -0.93% | Dec 31, 2016 | 10-Q | 2017-02-06 |
| Q3 2016 | 8.79 M | -71.1 K | -0.8% | Sep 30, 2016 | 10-Q | 2016-11-04 |
| Q2 2016 | 8.79 M | -186 K | -2.07% | Jun 30, 2016 | 10-Q | 2016-08-05 |
| Q1 2016 | 8.81 M | -158 K | -1.76% | Mar 31, 2016 | 10-K | 2017-06-29 |
| Q4 2015 | 8.86 M | -651 K | -6.84% | Dec 31, 2015 | 10-Q | 2016-02-05 |
| Q3 2015 | 8.86 M | -590 K | -6.24% | Sep 30, 2015 | 10-Q | 2015-11-06 |
| Q2 2015 | 8.97 M | -638 K | -6.64% | Jun 30, 2015 | 10-Q | 2015-07-30 |
| Q1 2015 | 8.97 M | -1.29 M | -12.6% | Mar 31, 2015 | 10-K | 2016-06-01 |
| Q4 2014 | 9.51 M | -1.41 M | -12.9% | Dec 31, 2014 | 10-Q | 2015-02-06 |
| Q3 2014 | 9.45 M | -2.02 M | -17.6% | Sep 30, 2014 | 10-Q | 2014-11-10 |
| Q2 2014 | 9.61 M | -2.16 M | -18.4% | Jun 30, 2014 | 10-Q | 2014-08-06 |
| Q1 2014 | 10.3 M | -1.91 M | -15.7% | Mar 31, 2014 | 10-K | 2015-06-02 |
| Q4 2013 | 10.9 M | -1.63 M | -13% | Dec 31, 2013 | 10-Q | 2014-02-05 |
| Q3 2013 | 11.5 M | -1.45 M | -11.2% | Sep 30, 2013 | 10-Q | 2013-11-01 |
| Q2 2013 | 11.8 M | -1.28 M | -9.84% | Jun 30, 2013 | 10-Q | 2013-08-06 |
| Q1 2013 | 12.2 M | -1.73 M | -12.4% | Mar 31, 2013 | 10-K | 2014-06-12 |
| Q4 2012 | 12.6 M | -2.3 M | -15.5% | Dec 31, 2012 | 10-Q | 2013-02-08 |
| Q3 2012 | 12.9 M | -1.71 M | -11.7% | Sep 30, 2012 | 10-Q | 2012-11-02 |
| Q2 2012 | 13.1 M | -1.98 M | -13.1% | Jun 30, 2012 | 10-Q | 2012-08-06 |
| Q1 2012 | 13.9 M | -1.81 M | -11.5% | Mar 31, 2012 | 10-K/A | 2013-07-19 |
| Q4 2011 | 14.9 M | Dec 31, 2011 | 10-Q | 2012-02-02 | ||
| Q3 2011 | 14.6 M | Sep 30, 2011 | 10-Q | 2011-11-01 | ||
| Q2 2011 | 15 M | Jun 30, 2011 | 10-Q | 2011-08-03 | ||
| Q1 2011 | 15.7 M | Mar 31, 2011 | 10-K | 2012-05-29 |