| 2026-02-25 | 10-K | Stock registered under Section 12(b) | Common Stock, $0.001 par value · ERII · Nasdaq Stock Market |
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| 2025-02-26 | 10-K | Stock registered under Section 12(b) | Common Stock, $0.001 par value · ERII · Nasdaq Stock Market |
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| 2024-02-21 | 10-K | Stock registered under Section 12(b) | Common Stock, $0.001 par value · ERII · Nasdaq Stock Market |
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| 2023-02-22 | 10-K | Stock registered under Section 12(b) | Common Stock, $0.001 par value · ERII · Nasdaq Stock Market |
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| 2022-02-24 | 10-K | Well-known seasoned issuer | No |
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| 2021-11-05 | 10-Q | Smaller reporting company | Yes |
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| 2021-08-06 | 10-Q | Smaller reporting company | Yes |
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| 2021-05-07 | 10-Q | Smaller reporting company | Yes |
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| 2021-03-12 | 10-K | Smaller reporting company | Yes |
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| 2021-03-12 | 10-K | Well-known seasoned issuer | No |
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| 2020-10-30 | 10-Q | Stock registered under Section 12(b) | Common · ERII · NASDAQ |
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| 2020-07-31 | 10-Q | Stock registered under Section 12(b) | Common · ERII · NASDAQ |
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| 2020-06-10 | 10-K/A | Stock registered under Section 12(b) | Common Stock, $0.001 par value per share · ERII · NASDAQ |
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| 2020-06-10 | 10-K/A | Well-known seasoned issuer | No |
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| 2020-05-01 | 10-Q | Stock registered under Section 12(b) | Common · ERII · NASDAQ |
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| 2020-03-06 | 10-K | Stock registered under Section 12(b) | Common Stock, $0.001 par value per share · ERII · NASDAQ |
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| 2020-03-06 | 10-K | Well-known seasoned issuer | No |
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| 2019-03-12 | 10-K/A | Well-known seasoned issuer | No |
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| 2019-03-07 | 10-K | Shares outstanding as of 2019-02-28 | 59,562,995 |
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| 2019-03-07 | 10-K | Public float as of 2018-06-30 | $287.00M |
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| 2019-03-07 | 10-K | Well-known seasoned issuer | No |
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| 2018-03-08 | 10-K | Well-known seasoned issuer | No |
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| 2017-08-03 | 10-Q | Well-known seasoned issuer | No |
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| 2017-05-04 | 10-Q | Well-known seasoned issuer | No |
|---|
| 2017-03-10 | 10-K | Well-known seasoned issuer | No |
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| 2016-11-03 | 10-Q | Well-known seasoned issuer | No |
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| 2016-08-04 | 10-Q | Well-known seasoned issuer | No |
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| 2016-05-05 | 10-Q | Well-known seasoned issuer | No |
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| 2016-03-04 | 10-K | Well-known seasoned issuer | No |
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| 2015-11-05 | 10-Q | Well-known seasoned issuer | No |
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| 2015-08-06 | 10-Q | Well-known seasoned issuer | No |
|---|
| 2015-05-07 | 10-Q | Well-known seasoned issuer | No |
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| 2015-03-06 | 10-K | Well-known seasoned issuer | No |
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| 2013-11-07 | 10-Q | Well-known seasoned issuer | No |
|---|
| 2013-08-06 | 10-Q | Well-known seasoned issuer | No |
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| 2013-05-09 | 10-Q | Well-known seasoned issuer | No |
|---|
| 2013-03-12 | 10-K | Well-known seasoned issuer | No |
|---|
| 2012-11-08 | 10-Q | Well-known seasoned issuer | No |
|---|
| 2012-08-07 | 10-Q | Well-known seasoned issuer | No |
|---|
| 2012-05-09 | 10-Q | Well-known seasoned issuer | No |
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| 2012-03-14 | 10-K | Well-known seasoned issuer | No |
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| 2011-11-08 | 10-Q | Well-known seasoned issuer | No |
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| 2011-08-08 | 10-Q | Well-known seasoned issuer | No |
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