CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY (Unaudited) - USD ($) $ in Millions	Total	Common Stock	Additional Paid-In Capital	Accumulated Deficit	Accumulated Other Comprehensive Income (Loss)	Series A convertible preferred stock Preferred Stock
Balance (in Value) at Dec. 31, 2020	$ 138.8		$ 401.6	$ (327.8)		$ 65.0
Balance (in Shares) at Dec. 31, 2020		65,023,174				650,000
Exercise of stock options (in Value)	0.6		0.6
Exercise of stock options (in shares)		149,545
Vesting of restricted stock units (in Value)	(0.8)		(0.8)
Vesting of restricted stock units (in Shares)		5,737
Series A convertible preferred stock dividend	(1.2)			(1.2)
Stock-based compensation expense	1.4		1.4
Foreign currency translation adjustments	0.2				$ 0.2
Net income	(7.3)			(7.3)
Balance (in Value) at Mar. 31, 2021	131.7		402.8	(336.3)	0.2	$ 65.0
Balance (in Shares) at Mar. 31, 2021		65,178,456				650,000
Balance (in Value) at Dec. 31, 2020	138.8		401.6	(327.8)		$ 65.0
Balance (in Shares) at Dec. 31, 2020		65,023,174				650,000
Net income	28.0
Balance (in Value) at Jun. 30, 2021	158.0		394.9	(302.3)	0.4	$ 65.0
Balance (in Shares) at Jun. 30, 2021		63,804,434				650,000
Balance (in Value) at Mar. 31, 2021	131.7		402.8	(336.3)	0.2	$ 65.0
Balance (in Shares) at Mar. 31, 2021		65,178,456				650,000
Vesting of restricted stock units (in Value)	(0.3)		(0.3)
Vesting of restricted stock units (in Shares)		143,601
Series A convertible preferred stock dividend	(1.3)			(1.3)
Common stock repurchased and retired(Shares)		(1,517,623)
Common stock repurchased and retired,Value	(10.5)		(10.5)
Stock-based compensation expense	2.9		2.9
Foreign currency translation adjustments	0.2				0.2
Net income	35.3			35.3
Balance (in Value) at Jun. 30, 2021	158.0		394.9	(302.3)	0.4	$ 65.0
Balance (in Shares) at Jun. 30, 2021		63,804,434				650,000
Balance (in Value) at Dec. 31, 2021	176.0		387.8	(276.8)		$ 65.0
Balance (in Shares) at Dec. 31, 2021		62,489,278				650,000
Exercise of stock options (in Value)	0.8		0.8
Exercise of stock options (in shares)		91,425
Exercise of warrants (in shares)		817,648
Exercise of warrants (Values)	9.4		9.4
Vesting of restricted stock units (in Shares)		43,450
Series A convertible preferred stock dividend	(1.2)			(1.2)
Stock-based compensation expense	2.2		2.2
Net income	13.0			13.0
Balance (in Value) at Mar. 31, 2022	200.2		400.2	(265.0)		$ 65.0
Balance (in Shares) at Mar. 31, 2022		63,441,801				650,000
Balance (in Value) at Dec. 31, 2021	176.0		387.8	(276.8)		$ 65.0
Balance (in Shares) at Dec. 31, 2021		62,489,278				650,000
Net income	30.7
Balance (in Value) at Jun. 30, 2022	218.7		402.3	(248.5)	(0.1)	$ 65.0
Balance (in Shares) at Jun. 30, 2022		63,504,018				650,000
Balance (in Value) at Mar. 31, 2022	200.2		400.2	(265.0)		$ 65.0
Balance (in Shares) at Mar. 31, 2022		63,441,801				650,000
Vesting of restricted stock units (in Value)	$ (0.2)		(0.2)
Vesting of restricted stock units (in Shares)	62,217
Series A convertible preferred stock dividend	$ (1.2)			(1.2)
Stock-based compensation expense	2.3		2.3
Foreign currency translation adjustments	(0.1)				(0.1)
Net income	17.7			17.7
Balance (in Value) at Jun. 30, 2022	$ 218.7		$ 402.3	$ (248.5)	$ (0.1)	$ 65.0
Balance (in Shares) at Jun. 30, 2022		63,504,018				650,000