Combined Statement of Stockholders' Equity (Deficit) (Unaudited) - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-in Capital	Accumulated Deficit
Beginning balance at Dec. 31, 2017	$ 0	$ 0	$ 0	$ 0
Beginning balance, shares at Dec. 31, 2017		0
Issuance of common stock to founders (unaudited)	2		2
Issuance of common stock to founders (unaudited), shares		2,000
Net loss (unaudited)	(254)			(254)
Ending balance at Mar. 31, 2018	(252)	$ 0	2	(254)
Ending balance, shares at Mar. 31, 2018		2,000
Beginning balance at Dec. 31, 2017	0	$ 0	0	0
Beginning balance, shares at Dec. 31, 2017		0
Net loss (unaudited)	(804)
Ending balance at Sep. 30, 2018	(802)	$ 0	2	(804)
Ending balance, shares at Sep. 30, 2018		2,000
Beginning balance at Dec. 31, 2017	0	$ 0	0	0
Beginning balance, shares at Dec. 31, 2017		0
Issuance of common stock (unaudited), shares		1,000
Ending balance at Dec. 31, 2018	$ (1,286)	$ 0	2	(1,288)
Ending balance, shares at Dec. 31, 2018	6,760,334	0
Beginning balance at Mar. 31, 2018	$ (252)	$ 0	2	(254)
Beginning balance, shares at Mar. 31, 2018		2,000
Net loss (unaudited)	(260)			(260)
Ending balance at Jun. 30, 2018	(512)	$ 0	2	(514)
Ending balance, shares at Jun. 30, 2018		2,000
Net loss (unaudited)	(290)			(290)
Ending balance at Sep. 30, 2018	(802)	$ 0	2	(804)
Ending balance, shares at Sep. 30, 2018		2,000
Beginning balance at Dec. 31, 2018	$ (1,286)	$ 0	2	(1,288)
Beginning balance, shares at Dec. 31, 2018	6,760,334	0
Merger of entities under common control into the Company (unaudited), shares		6,760,334
Vesting restrictions placed on previously issued and outstanding common stock (unaudited), shares		(3,373,408)
Issuance of common stock (unaudited), shares		1,491,072
Vesting of restricted shares (unaudited), shares		1,054,192
Net loss (unaudited)	$ (1,251)			(1,251)
Ending balance at Mar. 31, 2019	(2,537)	$ 0	2	(2,539)
Ending balance, shares at Mar. 31, 2019		5,932,190
Beginning balance at Dec. 31, 2018	$ (1,286)	$ 0	2	(1,288)
Beginning balance, shares at Dec. 31, 2018	6,760,334	0
Net loss (unaudited)	$ (157,125)
Ending balance at Sep. 30, 2019	$ (152,461)	$ 0	5,952	(158,413)
Ending balance, shares at Sep. 30, 2019	7,420,989	7,420,989
Beginning balance at Mar. 31, 2019	$ (2,537)	$ 0	2	(2,539)
Beginning balance, shares at Mar. 31, 2019		5,932,190
Issuance of common stock (unaudited)	5,885		5,885
Issuance of common stock (unaudited), shares		1,084,000
Vesting of restricted shares (unaudited), shares		203,078
Stock-based compensation (unaudited)	29		29
Net loss (unaudited)	(87,762)			(87,762)
Ending balance at Jun. 30, 2019	(84,385)	$ 0	5,916	(90,301)
Ending balance, shares at Jun. 30, 2019		7,219,268
Vesting of restricted shares (unaudited), shares		201,721
Stock-based compensation (unaudited)	36		36
Net loss (unaudited)	(68,112)			(68,112)
Ending balance at Sep. 30, 2019	$ (152,461)	$ 0	$ 5,952	$ (158,413)
Ending balance, shares at Sep. 30, 2019	7,420,989	7,420,989