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Net Income (Loss) Per Common (Details) - shares | Jun. 30, 2021 | Dec. 31, 2020 | Jun. 30, 2020
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Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items] |  |  |
Preferred shares, issued | 1,016,000 | 1,016,000 |
Series1 Preferred Shares |  |  |
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items] |  |  |
Preferred shares, issued | 1,016,000 |  | 1,016,000

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- Definition Total number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) issued to shareholders (includes related preferred shares that were issued, repurchased, and remain in the treasury). May be all or portion of the number of preferred shares authorized. Excludes preferred shares that are classified as debt. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(28)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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