Description of Organization and Business Operations (Details) - USD ($)			3 Months Ended
	Feb. 21, 2018	Dec. 15, 2017	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018	Feb. 15, 2018	Dec. 31, 2017
Description of Organization and Business Operations
Units issued (in units)				$ 236,939,488
Proceeds received from initial public offering				250,000,000
Deferred underwriting commissions charged to equity in connection with the initial public offering				7,875,000
Proceeds received from private placement				6,500,000
Cash in operating bank account			$ 744,766	$ 1,070,677	$ 947,098		$ 119,821
Aggregate fair value of assets held in Trust Account (as a percent)			80.00%
Acquisition of outstanding voting securities (as a percent)			50.00%
Common stock, par value (in dollars per share)			$ 0.0001		$ 0.0001	$ 0.0001
Net tangible assets			$ 5,000,001
Restriction on redemption of common stock sold (as a percent)			15.00%
Redemption obligation of shares upon non completion of business combination (as a percent)			100.00%
Term to complete business combination			24 months
Number of business days to redeem public shares			10 days
Maximum reduction in interest to pay dissolution expenses			$ 50,000
Annual limit of amount released to the Company to fund working capital requirements			$ 250,000
Redemption price (in dollars per share)			$ 10.00
Cash Held Outside of Trust Account			$ 745,000
Interest available			4,300,000
Interest withdrawn from Trust Account			$ 158,255
Sponsor
Description of Organization and Business Operations
Offer price (in dollars per unit)			$ 1.50
Common stock, par value (in dollars per share)		$ 0.0001
Proceeds from issuance of common stock to Sponsor		$ 25,000	$ 25,000
Loan from related party	$ 270,531		270,531
Interest withdrawn from Trust Account			$ 1,300,000
IPO
Description of Organization and Business Operations
Units issued (in units)	$ 25,000,000
Offer price (in dollars per unit)	$ 10.00
Proceeds received from initial public offering	$ 250,000,000
Offering costs	13,060,000
Deferred underwriting commissions charged to equity in connection with the initial public offering	7,875,000
Private Placement Warrants | Sponsor
Description of Organization and Business Operations
Units issued (in units)	$ 4,333,333
Offer price (in dollars per unit)	$ 1.50
Proceeds received from private placement	$ 6,500,000
Additional warrants available (in warrants)	500,000
Over-Allotment Option
Description of Organization and Business Operations
Underwriting option term	45 days
Offer price (in dollars per unit)	$ 10.00
Number of additional units to be purchased to cover over-allotment	3,750,000