Condensed Consolidated Statements of Stockholders' Deficit (Unaudited) - USD ($) $ in Millions	Common Stock [Member]	Additional Paid-in Capital [Member]	AOCI Attributable to Parent [Member]	Retained Earnings [Member]	Total
Balance at Dec. 31, 2020		$ 324.6	$ 31.1	$ (457.4)	$ (101.7)
Balance, shares at Dec. 31, 2020	22,430,475
Foreign currency translation adjustments			(1.1)		(1.1)
Actuarial gains on pension plan			4.6		4.6
Reclassification of loss on hedging instrument to comprehensive income			0.5		0.5
Shares issued in settlement of RSUs
Shares issued in net settlement of RSUs, shares	163,732
Stock-based compensation expense		1.4			1.4
Net income (loss)				(16.7)	(16.7)
Change in fair value of hedging instrument			0.6		0.6
Balance at Mar. 31, 2021		326.0	35.7	(474.1)	(112.4)
Balance, shares at Mar. 31, 2021	22,594,207
Balance at Dec. 31, 2020		324.6	31.1	(457.4)	(101.7)
Balance, shares at Dec. 31, 2020	22,430,475
Foreign currency translation adjustments					2.2
Net income (loss)					(35.5)
Change in fair value of hedging instrument					0.3
Balance at Sep. 30, 2021		331.2	40.8	(492.9)	(120.9)
Balance, shares at Sep. 30, 2021	22,754,597
Balance at Mar. 31, 2021		326.0	35.7	(474.1)	(112.4)
Balance, shares at Mar. 31, 2021	22,594,207
Foreign currency translation adjustments			0.1		0.1
Actuarial gains on pension plan			0.9		0.9
Reclassification of loss on hedging instrument to comprehensive income			0.5		0.5
Stock-based compensation expense		3.3			3.3
Net income (loss)				(43.8)	(43.8)
Change in fair value of hedging instrument			(0.3)		(0.3)
Balance at Jun. 30, 2021		329.3	36.9	(517.9)	(151.7)
Balance, shares at Jun. 30, 2021	22,594,207
Foreign currency translation adjustments			3.2		3.2
Actuarial gains on pension plan			0.4		0.4
Reclassification of loss on hedging instrument to comprehensive income			0.3		0.3
Shares issued in settlement of RSUs		(1.6)			(1.6)
Shares issued in net settlement of RSUs, shares	160,390
Stock-based compensation expense		3.5			3.5
Net income (loss)				25.0	25.0
Change in fair value of hedging instrument
Balance at Sep. 30, 2021		331.2	40.8	(492.9)	(120.9)
Balance, shares at Sep. 30, 2021	22,754,597
Balance at Dec. 31, 2021		372.3	43.8	(494.1)	(78.0)
Balance, shares at Dec. 31, 2021	26,433,562
Foreign currency translation adjustments			2.4		2.4
Actuarial gains on pension plan			0.7		0.7
Reclassification of loss on hedging instrument to comprehensive income			0.2		0.2
Shares issued in settlement of RSUs
Shares issued in net settlement of RSUs, shares	447,060
Stock-based compensation expense		2.7			2.7
Balance at Mar. 31, 2022		375.0	47.1	(492.6)	(70.5)
Balance, shares at Mar. 31, 2022	26,880,622
Balance at Dec. 31, 2021		372.3	43.8	(494.1)	(78.0)
Balance, shares at Dec. 31, 2021	26,433,562
Foreign currency translation adjustments					13.0
Net income (loss)					19.2
Change in fair value of hedging instrument
Balance at Sep. 30, 2022		379.9	54.4	(484.9)	(50.6)
Balance, shares at Sep. 30, 2022	25,912,781
Balance at Mar. 31, 2022		375.0	47.1	(492.6)	(70.5)
Balance, shares at Mar. 31, 2022	26,880,622
Foreign currency translation adjustments			5.8		5.8
Actuarial gains on pension plan			2.6		2.6
Reclassification of loss on hedging instrument to comprehensive income			0.2		0.2
Shares issued in settlement of RSUs		(0.2)			(0.2)
Shares issued in net settlement of RSUs, shares	45,594
Stock-based compensation expense		2.6			2.6
Repurchase of common stock				(5.1)	(5.1)
Repurchase of common stock, shares	(477,643)
Net income (loss)				7.5	7.5
Balance at Jun. 30, 2022		377.4	55.7	(490.2)	(57.1)
Balance, shares at Jun. 30, 2022	26,448,573
Foreign currency translation adjustments			4.8		4.8
Actuarial gains on pension plan			(6.2)		(6.2)
Reclassification of loss on hedging instrument to comprehensive income			0.1		0.1
Shares issued in settlement of RSUs
Shares issued in net settlement of RSUs, shares	4,160
Stock-based compensation expense		2.5			2.5
Repurchase of common stock				(4.9)	(4.9)
Repurchase of common stock, shares	(539,952)
Net income (loss)				10.2	10.2
Change in fair value of hedging instrument
Balance at Sep. 30, 2022		$ 379.9	$ 54.4	$ (484.9)	$ (50.6)
Balance, shares at Sep. 30, 2022	25,912,781