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v3.21.2

Non-Redeemable Preferred Stock - Additional Information (Detail) - $ / shares | 9 Months Ended | 12 Months Ended
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Sep. 30, 2021 | Dec. 31, 2020
Preferred Stock [Line Items] |  |
Number of shares of common stock for each share of converted preferred stock | anti-dilution terms of the Series B and Series D Preferred, the conversion ratio of the Series B Preferred increased to 43.3333 to 1 from 33.3333 to 1 and the Series D Preferred increased to 0.325 to 1 from 0.25 to 1 |
Series B Preferred Stock [Member] |  |
Preferred Stock [Line Items] |  |
Preferred stock, shares outstanding | 20,000 | 20,000
Number of cumulative convertible preferred stock | 20,000 | 20,000
Preferred stock cumulative dividend rate | 12.00% | 12.00%
Cash dividends paid on non-redeemable preferred stock per share | $ 12.00 |
Preferred stock, par value | $ 100 | $ 100
Number of shares of common stock for each share of converted preferred stock | 43.3333 shares of common stock for each share of preferred stock |
Preferred stock converted into shares of common stock | 866,666 |
Votes per share for preferred share holder | One vote per share |
Series D Preferred Stock [Member] |  |
Preferred Stock [Line Items] |  |
Preferred stock, shares outstanding | 1,000,000 | 1,000,000
Number of cumulative convertible preferred stock | 1,000,000 | 1,000,000
Preferred stock cumulative dividend rate | 6.00% | 6.00%
Cash dividends paid on non-redeemable preferred stock per share | $ 0.06 |
Number of shares of common stock for each share of converted preferred stock | 0.325 share of common stock for 1 share of preferred stock |
Preferred stock converted into shares of common stock | 325,000 |
Votes per share for preferred share holder | .875 votes per share |
Preferred stock no par value |  |
Liquidation preference of Series D preferred stock | $ 1.00 |

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- Definition The per share liquidation preference (or restrictions) of nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer) that has a preference in involuntary liquidation considerably in excess of the par or stated value of the shares. The liquidation preference is the difference between the preference in liquidation and the par or stated values of the share. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08(d)) -URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=123467817&loc=d3e21475-112644 Reference 3: 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 Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 13 -Subparagraph (h) -URI http://asc.fasb.org/extlink&oid=123467817&loc=SL123496158-112644 Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=123467817&loc=d3e21484-112644 + Details
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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 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 13 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123467817&loc=SL123496158-112644 + Details
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