Quarterly report pursuant to Section 13 or 15(d)

Summary of Significant Accounting Policies (Details)

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Summary of Significant Accounting Policies (Details) - USD ($)
 3 Months Ended 9 Months Ended
Sep. 30, 2020
Jun. 30, 2020
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
Net income available to Class A common stockholders:          
Interest income   $ 8,000 $ 1,744,000 $ 1,906,000 $ 4,130,000
Less: Income and franchise taxes   1,000 (405,000) (519,000) (952,000)
Net income attributable to Class A common stockholders   9,000 1,339,000 1,387,000 3,178,000
Net (loss) available to Class B common stockholders:          
Net (loss) income $ (2,812,000) (2,812,000) (941,000) (2,143,000) 492,000
Less: amount attributable to Class A common stockholders   9,000 (1,339,000) (1,387,000) (3,178,000)
Net loss attributable to Class B common stockholders   $ (2,821,000) $ (2,280,000) $ (3,530,000) $ (2,686,000)