Stockholders' Equity - Schedule of Stockholders' Equity (Details) - shares		12 Months Ended
	Apr. 27, 2017	Dec. 31, 2018	Dec. 31, 2017
Preferred Stock Series A
Class of Stock [Line Items]
Issuance of stock and warrants (in shares)			95,000
Preferred Stock Series A | Series A Preferred Stock
Class of Stock [Line Items]
Outstanding at the Transaction date (in shares)			95,000
Common Stock
Class of Stock [Line Items]
Issuance of stock and warrants (in shares)			4,900,776
Issued at IPO (in shares)			7,597,044
Forfeitures/Cancellations of founder shares (in shares)			(2,266,170)
Conversion of founder shares (in shares)			1,429,335
Redemption of Class A shares (in shares)			(5,804,404)
Outstanding at the Transaction date (in shares)			35,664,273
Common Stock | Class A Common Stock
Class of Stock [Line Items]
Issuance of stock and warrants (in shares)		6,990,744	588,276
Issued at IPO (in shares)			7,597,044
Conversion of founder shares (in shares)			3,475,665
Redemption of Class A shares (in shares)			(5,804,404)
Outstanding at the Transaction date (in shares)			5,856,581
Common Stock | Class B Common Stock
Class of Stock [Line Items]
Outstanding at the Transaction date (in shares)			29,807,692
Common Stock | Class F Common Stock
Class of Stock [Line Items]
Issuance of stock and warrants (in shares)			4,312,500
Forfeitures/Cancellations of founder shares (in shares)			(2,266,170)
Conversion of founder shares (in shares)			(2,046,330)
Outstanding at the Transaction date (in shares)			0
Common Stock | Class A Common Stock Warrants
Class of Stock [Line Items]
Issuance of stock and warrants (in shares)			588,276
Issued at IPO (in shares)			7,597,044
Issued in connection with private placement (in shares)			8,408,838
Outstanding at the Transaction date (in shares)			25,594,158
PIPE Investors | Series A Preferred Stock
Class of Stock [Line Items]
Issuance of stock and warrants (in shares)	20,000
PIPE Investors | Preferred Stock Series A | Series A Preferred Stock
Class of Stock [Line Items]
Issuance of stock and warrants (in shares)			75,000
PIPE Investors | Preferred Stock Series A | Class A Common Stock Warrants
Class of Stock [Line Items]
Issuance of stock and warrants (in shares)			5,000,000
Rosemore Holdings Inc | Preferred Stock Series A | Series A Preferred Stock
Class of Stock [Line Items]
Issuance of stock and warrants (in shares)			20,000
Tema | Common Stock
Class of Stock [Line Items]
Issuance of stock and warrants (in shares)			29,807,692
Tema | Common Stock | Class B Common Stock
Class of Stock [Line Items]
Issuance of stock and warrants (in shares)			29,807,692
Tema | Common Stock | Class A Common Stock Warrants
Class of Stock [Line Items]
Issuance of stock and warrants (in shares)			4,000,000