CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY - 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, 2016		18,245
Beginning Balance at Dec. 31, 2016		$ 0.2	$ (56.5)	$ 317.0	$ 169.6	$ (92.0)
Increase (Decrease) in Stockholders' Equity
Net income	$ 80.3				80.3
Other comprehensive (loss)/income, after income tax benefit	8.8					8.8
Reclassification of the stranded tax effects related to the Tax Act (Note 10)					10.9	(10.9)
Dividends declared					(25.1)
Shares purchased (Note 10)			(6.8)
Stock options exercised (in shares)		140
Stock options exercised				0.4
Restricted stock vesting (in shares)		73
Restricted stock vesting (Note 10)			(2.5)
Stock-based compensation				6.4
Other/Currency				0.1
Ending balance (in shares) at Dec. 31, 2017		18,458
Ending Balance at Dec. 31, 2017		$ 0.2	(65.8)	323.9	235.7	(94.1)
Increase (Decrease) in Stockholders' Equity
Net income	36.4				36.4
Other comprehensive (loss)/income, after income tax benefit	(11.3)					(11.3)
Dividends declared					(27.8)
Shares purchased (Note 10)			(9.3)
Stock options exercised (in shares)		67
Stock options exercised				0.7
Restricted stock vesting (in shares)		72
Restricted stock vesting (Note 10)			(1.5)
Stock-based compensation				4.0
Other/Currency				(0.1)
Ending balance (in shares) at Dec. 31, 2018		18,597
Ending Balance at Dec. 31, 2018	390.2	$ 0.2	(76.6)	328.5	243.2	(105.1)
Increase (Decrease) in Stockholders' Equity
Net income	55.4				55.4
Other comprehensive (loss)/income, after income tax benefit	(8.2)					(8.2)
Dividends declared					(30.5)
Shares purchased (Note 10)			(4.9)
Stock options exercised (in shares)		17
Restricted stock vesting (in shares)		64
Restricted stock vesting (Note 10)			(1.3)
Stock-based compensation				5.6
Ending balance (in shares) at Dec. 31, 2019		18,678
Ending Balance at Dec. 31, 2019	$ 406.3	$ 0.2	$ (82.8)	$ 334.1	$ 268.1	$ (113.3)