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Stock Transactions and Unit Redemptions - Gross Unit Redemptions and Share Repurchases of Class A Common Stock (Detail) | 1 Months Ended | 3 Months Ended
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Mar. 31, 2019 USD ($) $ / shares shares | Mar. 31, 2019 USD ($) $ / shares shares
Stock Transactions Parenthetical Disclosures [Abstract] |  |
Redemptions, Number of Units | shares |  | 1,202,948
Repurchases, Number of Shares | shares | 233,172 | 233,172
Total Number of Units Redeemed or Shares Repurchased | shares |  | 1,436,120
Redemptions, Average Price Paid per Unit or Share | $ / shares |  | $ 6.00
Repurchases, Average Price Paid per Unit or Shares | $ / shares | $ 5.30 | 5.30
Total Redemptions and Repurchases, Average Price Paid per Unit or Shares | $ / shares |  | $ 5.88
Total Redemptions and Repurchases, Approximate Dollar Value of Units and Shares That May Yet Be Redeemed/Purchased Under the Plan | $ | $ 257,796,140 | $ 257,796,140

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- Definition Total cost of shares repurchased divided by the total number of shares repurchased. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 30 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6405813&loc=d3e23239-112655 + Details
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