CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY (Unaudited) - USD ($) shares in Thousands, $ in Millions	Total	Common Stock	Treasury Stock	Additional Paid-In Capital	Retained Earnings	Accumulated Other Comprehensive Loss
Beginning balance (in shares) at Dec. 31, 2018		18,597
Balance at the beginning of the period at Dec. 31, 2018	$ 390.2	$ 0.2	$ (76.6)	$ 328.5	$ 243.2	$ (105.1)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	11.8				11.8
Other comprehensive income (loss)	(1.7)					(1.7)
Dividends declared	(7.6)				(7.6)
Shares purchased (Note 8)	(0.3)		(0.3)
Stock options exercised (in shares)		9
Stock options exercised	0.0
Restricted stock vesting (in shares)		3
Restricted stock vesting (Note 8)	(0.1)		(0.1)
Stock-based compensation	1.9			1.9
Ending balance (in shares) at Mar. 31, 2019		18,609
Balance at the end of the period at Mar. 31, 2019	394.2	$ 0.2	(77.0)	330.4	247.4	(106.8)
Beginning balance (in shares) at Dec. 31, 2018		18,597
Balance at the beginning of the period at Dec. 31, 2018	390.2	$ 0.2	(76.6)	328.5	243.2	(105.1)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	25.4
Other comprehensive income (loss)	4.5
Ending balance (in shares) at Jun. 30, 2019		18,631
Balance at the end of the period at Jun. 30, 2019	406.5	$ 0.2	(78.6)	332.1	253.4	(100.6)
Beginning balance (in shares) at Mar. 31, 2019		18,609
Balance at the beginning of the period at Mar. 31, 2019	394.2	$ 0.2	(77.0)	330.4	247.4	(106.8)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	13.6				13.6
Other comprehensive income (loss)	6.2					6.2
Dividends declared	(7.6)				(7.6)
Shares purchased (Note 8)	(1.6)		(1.6)
Stock options exercised (in shares)		1
Stock options exercised	0.0
Restricted stock vesting (in shares)		21
Restricted stock vesting (Note 8)	0.0
Stock-based compensation	1.7			1.7
Other/currency	0.0			0.0
Ending balance (in shares) at Jun. 30, 2019		18,631
Balance at the end of the period at Jun. 30, 2019	406.5	$ 0.2	(78.6)	332.1	253.4	(100.6)
Beginning balance (in shares) at Dec. 31, 2019		18,678
Balance at the beginning of the period at Dec. 31, 2019	406.3	$ 0.2	(82.8)	334.1	268.1	(113.3)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	16.4				16.4
Other comprehensive income (loss)	(2.6)					(2.6)
Dividends declared	(8.0)				(8.0)
Shares purchased (Note 8)	(3.6)		(3.6)
Stock options exercised (in shares)		3
Stock options exercised	0.0
Restricted stock vesting (in shares)		8
Restricted stock vesting (Note 8)	(0.2)		(0.2)
Stock-based compensation	1.5			1.5
Ending balance (in shares) at Mar. 31, 2020		18,689
Balance at the end of the period at Mar. 31, 2020	409.8	$ 0.2	(86.6)	335.6	276.5	(115.9)
Beginning balance (in shares) at Dec. 31, 2019		18,678
Balance at the beginning of the period at Dec. 31, 2019	406.3	$ 0.2	(82.8)	334.1	268.1	(113.3)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(33.7)
Other comprehensive income (loss)	2.1
Ending balance (in shares) at Jun. 30, 2020		18,700
Balance at the end of the period at Jun. 30, 2020	358.0	$ 0.2	(86.6)	337.2	218.4	(111.2)
Beginning balance (in shares) at Mar. 31, 2020		18,689
Balance at the beginning of the period at Mar. 31, 2020	409.8	$ 0.2	(86.6)	335.6	276.5	(115.9)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(50.1)				(50.1)
Other comprehensive income (loss)	4.7					4.7
Dividends declared	(8.0)				(8.0)
Shares purchased (Note 8)	0.0		0.0
Stock options exercised (in shares)		2
Stock options exercised	0.0
Restricted stock vesting (in shares)		9
Restricted stock vesting (Note 8)	0.0
Stock-based compensation	1.6			1.6
Ending balance (in shares) at Jun. 30, 2020		18,700
Balance at the end of the period at Jun. 30, 2020	$ 358.0	$ 0.2	$ (86.6)	$ 337.2	$ 218.4	$ (111.2)