Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurements - Summary of Assets Measured at Fair Value on a Recurring Basis (Details)

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Fair Value Measurements - Summary of Assets Measured at Fair Value on a Recurring Basis (Details) - USD ($)
Jun. 30, 2019
Sep. 30, 2018
Recurring Basis | Level 1    
Assets:    
Cash and marketable securities held in Trust Account $ 77,838,232 $ 144,964,309