Stockholders' Equity (Details)	6 Months Ended
	Jun. 30, 2019 Vote $ / shares shares	Dec. 31, 2018 $ / shares shares	Jun. 30, 2018 shares
Stockholders' Equity [Abstract]
Preferred stock, shares authorized (in shares)	1,000,000	1,000,000
Preferred stock, par value (in dollars per share) | $ / shares	$ 0.0001	$ 0.0001
Preferred stock, shares issued (in shares)	0	0
Preferred stock, shares outstanding (in shares)	0	0
Common stock, subject to possible redemption (in shares)	20,865,717	20,869,316	0
Stock conversion ratio	1
Percentage of shares owned by initial stockholders	20.00%
Number of trading days	20 days
Consecutive trading day period	30 days
Private Placement Warrant [Member]
Stockholders' Equity [Abstract]
Exercise price (in dollars per share) | $ / shares	$ 11.50
Period to exercise warrants after business combination	30 days
Period to exercise warrants after public offerings	12 months
Expiration period upon redemption or liquidation	5 years
Redemption price (in dollars per share) | $ / shares	$ 0.01
Number of trading days	20 days
Consecutive trading day period	30 days
Number of business days before the notice of redemption to warrant holders	3 days
Period not to transfer, assign or sell warrants	30 days
Private Placement Warrant [Member] | Minimum [Member]
Stockholders' Equity [Abstract]
Notice period for redemption	30 days
Class A Common Stock [Member]
Stockholders' Equity [Abstract]
Common stock, shares authorized (in shares)	100,000,000	100,000,000
Common stock, par value (in dollars per share) | $ / shares	$ 0.0001	$ 0.0001
Number of voting rights per share | Vote	1
Common stock, shares issued (in shares)	1,186,360	1,182,761
Common stock, shares outstanding (in shares)	1,186,360	1,182,761
Common stock, subject to possible redemption (in shares)	20,865,717	20,869,316
Class A Common Stock [Member] | Private Placement Warrant [Member]
Stockholders' Equity [Abstract]
Number of shares called by each warrant (in shares)	1
Sale price of common stock (in dollars per share) | $ / shares	$ 18.00
Class B Common Stock [Member]
Stockholders' Equity [Abstract]
Common stock, shares authorized (in shares)	10,000,000	10,000,000
Common stock, par value (in dollars per share) | $ / shares	$ 0.0001	$ 0.0001
Number of voting rights per share | Vote	1
Common stock, shares issued (in shares)	5,513,019	5,513,019
Common stock, shares outstanding (in shares)	5,513,019	5,513,019