Summary of Significant Accounting Policies (Details) - USD ($)		3 Months Ended
	Feb. 21, 2018	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018
Significant Accounting Policies
Deferred underwriting commissions charged to equity in connection with the initial public offering			$ 7,875,000
Temporary stock, shares outstanding (in shares)		24,137,548		24,054,988
Number of warrants excluded in the calculation of diluted income per share		12,666,666
Interest income		$ 1,464,039	364,909
Annual ceiling limit		250,000
Estimated total annual ceiling limit		867,000
Deferred tax asset		279,000		$ 217,000
Income Tax Expense (Benefit)		$ 297,083	$ 72,049
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent		26.50%
Unrecognized tax benefits		$ 0		$ 0
IPO
Significant Accounting Policies
Offering costs	$ 13,060,000
Deferred underwriting commissions charged to equity in connection with the initial public offering	$ 7,875,000