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Shareholders' Equity (Details) $ / shares in Units, $ in Thousands |  |  |  |  |  | 1 Months Ended | 2 Months Ended | 3 Months Ended | 9 Months Ended |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Oct. 25, 2021 $ / shares | Jan. 21, 2021 shares | Oct. 01, 2020 shares | Feb. 28, 2020 shares | May 13, 2019 $ / shares shares | Jul. 31, 2021 USD ($) $ / shares shares | Mar. 31, 2021 shares | Jan. 31, 2021 shares | Feb. 21, 2020 $ / shares shares | Sep. 30, 2021 USD ($) $ / shares shares | Sep. 30, 2021 USD ($) $ / shares shares | Oct. 14, 2021 USD ($) | Aug. 31, 2021 USD ($) | Jun. 14, 2021 $ / shares | Dec. 31, 2020 $ / shares shares | Dec. 31, 2019 $ / shares shares
Shareholders' Equity |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Vesting period |  |  |  |  | 3 years |  |  |  |  |  |  |  |  |  |  |
Subscribed number of shares |  |  |  |  |  |  |  |  |  |  | 0 |  |  |  |  |
Capital stock, issued (in shares) |  |  |  |  |  |  |  |  |  | 639,750,620 | 639,750,620 |  |  |  | 606,329,598 |
Capital stock, par value (in dollars per share) | $ / shares |  |  |  |  |  |  |  |  |  | $ 0 | $ 0 |  |  |  | $ 0 |
Number of shares called per warrant (in shares) |  |  |  |  | 52,800,000 |  |  |  |  |  |  |  |  |  | 52,800,000 |
Warrant exercise price (usd per share) | $ / shares |  |  |  |  | $ 11.50 |  |  |  |  |  |  |  |  |  |  |
Class of Warrant or Right, Outstanding |  |  |  |  |  |  |  |  | 24,132,666 |  |  |  |  |  |  |
Conversion ratio |  |  |  |  |  |  |  |  |  |  | 1 |  |  |  |  |
Class of Warrant or Right, Number of Securities Called by Each Warrant or Right |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1 |
Issuance of common stock, net (in shares) |  | 131,564 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common Stock, Voting Rights |  |  |  |  |  |  |  |  |  |  | one |  |  |  |  |
Preferred Stock, Liquidation Preference Per Share | $ / shares |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 100.00 |  |
Dividends, Cash | $ |  |  |  |  |  | $ 1 |  |  |  |  |  |  |  |  |  |
Stock Issued During Period, Value, Stock Dividend | $ |  |  |  |  |  | $ 16,141 |  |  |  | $ 16,141 |  |  |  |  |  |
Stock Repurchase Program, Authorized Amount | $ |  |  |  |  |  |  |  |  |  |  |  |  | $ 250,000 |  |  |
Stock Repurchase Program, Remaining Authorized Repurchase Amount | $ |  |  |  |  |  |  |  |  |  | 184,785 | $ 184,785 |  |  |  |  |
Common Stock Dividends, Shares |  |  |  |  |  | 664,730 |  |  |  |  |  |  |  |  |  |
Subsequent Event |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders' Equity |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Preferred Stock, Dividends Per Share, Declared | $ / shares | $ 1.3125 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock Repurchase Program, Authorized Amount | $ |  |  |  |  |  |  |  |  |  |  |  | $ 250,000 |  |  |  |
Stock Repurchase Program, Remaining Authorized Repurchase Amount | $ |  |  |  |  |  |  |  |  |  |  |  | $ 185 |  |  |  |
CPA Global |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders' Equity |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Newly issued ordinary shares (in shares) |  |  |  |  |  |  |  |  |  |  | 1,500,000 |  |  |  |  |
Stock issued |  |  | 210,357,918 |  |  |  |  | 1,500,000 |  |  |  |  |  |  |  |
Decision Resources Group |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders' Equity |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Newly issued ordinary shares (in shares) |  |  |  | 2,895,638 |  |  | 2,895,638 |  |  |  | 2,895,638 |  |  |  |  |
Warrant [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders' Equity |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Warrant exercise price (usd per share) | $ / shares |  |  |  |  |  |  |  |  | $ 11.50 |  |  |  |  |  |  |
Conversion ratio |  |  |  |  |  |  |  |  | 1 |  |  |  |  |  |  |
Management Incentive Plan |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders' Equity |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Vesting period |  |  |  |  |  |  |  |  |  |  | 5 years |  |  |  |  |
Preferred Shares |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders' Equity |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Preferred Stock, Dividends Per Share, Declared | $ / shares |  |  |  |  |  | $ 1.12 |  |  |  |  |  |  |  |  |  |
Dividends Payable | $ |  |  |  |  |  |  |  |  |  | $ 6,289 | $ 6,289 |  |  |  |  |
Churchill Public Shareholders |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders' Equity |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Issued and outstanding (in shares) |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 87,749,999 |
Churchill Public Shareholders | Public shares |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders' Equity |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Issued and outstanding (in shares) |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 68,999,999 |
Churchill Public Shareholders | Founder shares |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders' Equity |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Issued and outstanding (in shares) |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 18,750,000 |
Minimum |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders' Equity |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Preferred Stock, Convertible, Conversion Ratio |  |  |  |  |  |  |  |  |  |  |  |  |  | 3.2052 |  |
Maximum |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders' Equity |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Preferred Stock, Convertible, Conversion Ratio |  |  |  |  |  |  |  |  |  |  |  |  |  | 3.8462 |  |
Maximum | CPA Global |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders' Equity |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Issuance of common stock, net (in shares) |  |  | 218,183,778 |  |  |  |  |  |  |  |  |  |  |  |  |
Newly issued ordinary shares (in shares) |  |  | 218,306,663 |  |  |  |  |  |  |  |  |  |  |  |  |
Sponsor agreement |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders' Equity |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Capital stock, issued (in shares) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 7,000,000
Capital stock, par value (in dollars per share) | $ / shares |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 20.00
Sponsor agreement | Minimum |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders' Equity |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Consecutive Trading Day Period |  |  |  |  |  |  |  |  |  |  | 40 days |  |  |  |  |
Sponsor agreement | Maximum |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders' Equity |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Consecutive Trading Day Period |  |  |  |  |  |  |  |  |  |  | 60 days |  |  |  |  |

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- Definition Number of securities into which the class of warrant or right may be converted. For example, but not limited to, 500,000 warrants may be converted into 1,000,000 shares. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -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 + Details
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