CONSOLIDATED STATEMENTS OF STOCKHOLDER'S EQUITY (DEFICIT) (Unaudited) - USD ($) $ in Millions	Total	Common Stock	Additional Paid-in Capital	Retained Earnings (Deficit)	Treasury Stock
Balance at Dec. 31, 2018	$ 12.2			$ 12.2
Balance, shares at Dec. 31, 2018		7,300,000
Net income (loss)	(2.2)			(2.2)
Balance at Jun. 30, 2019	10.0			10.0
Balance, shares at Jun. 30, 2019		7,300,000
Balance at Mar. 31, 2019	9.6			9.6
Balance, shares at Mar. 31, 2019		7,300,000
Net income (loss)	0.4			0.4
Balance at Jun. 30, 2019	10.0			10.0
Balance, shares at Jun. 30, 2019		7,300,000
Balance at Dec. 31, 2019	(23.2)			(23.2)
Balance, shares at Dec. 31, 2019		7,300,000
Net income (loss)	(21.1)			(21.1)
Opening deferred tax liabilities under reverse recapitalization	(19.0)			(19.0)
Equity infusion from reverse recapitalization, net of transaction costs	175.7		$ 175.7
Equity infusion from reverse recapitalization, net of transaction costs, shares		21,911,359
Shares issued upon settlement of equity-linked incentive plan	3.1		3.1
Shares issued upon settlement of equity-linked incentive plan, shares		300,000
Disgorgement of short swing profits	1.6		1.6
Repurchases of common stock	(2.9)				$ (2.9)
Balance at Jun. 30, 2020	114.2		180.4	(63.3)	(2.9)
Balance, shares at Jun. 30, 2020		29,511,359
Balance at Mar. 31, 2020	128.8		178.8	(47.1)	(2.9)
Balance, shares at Mar. 31, 2020		29,511,359
Net income (loss)	(4.1)			(4.1)
Opening deferred tax liabilities under reverse recapitalization	(12.1)			(12.1)
Disgorgement of short swing profits	1.6		1.6
Balance at Jun. 30, 2020	$ 114.2		$ 180.4	$ (63.3)	$ (2.9)
Balance, shares at Jun. 30, 2020		29,511,359