Consolidated Statements of Shareholders' Equity - USD ($) $ in Millions		Total	Cumulative Effect, Period of Adoption, Adjustment	Common Stock	Additional Paid-In Capital	Retained Earnings	Retained Earnings Cumulative Effect, Period of Adoption, Adjustment	Treasury Stock	Accumulated Other Comprehensive (Loss) Income	Noncontrolling Interest
Beginning balance (in shares) at Dec. 31, 2017				15,153,009
Beginning balance at Dec. 31, 2017		$ 288.0	$ 2.6	$ 15.2	$ 117.8	$ 216.1	$ 2.6	$ (55.2)	$ (17.9)	$ 12.0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Comprehensive (loss) income		32.2				53.6			(23.0)	1.6
Stock-based compensation		8.3			8.3
Restricted stock awards issued (in shares)				410,100
Restricted stock awards issued		0.0		$ 0.4	(0.4)
Restricted stock cancelled (in shares)				(7,834)
Dividends		(6.4)				(6.4)
Purchase of treasury stock		(12.1)						(12.1)
Ending balance (in shares) at Dec. 31, 2018				15,555,275
Ending balance at Dec. 31, 2018		312.6		$ 15.6	125.7	265.9		(67.3)	(40.9)	13.6
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Comprehensive (loss) income		43.6				38.6			3.9	1.1
Stock-based compensation		4.1			4.1
Restricted stock awards issued (in shares)	[1]			266,123
Restricted stock awards issued	[1]	0.1		$ 0.2	(0.1)
Restricted stock cancelled (in shares)				(115,000)
Restricted stock cancelled		0.0		$ (0.1)	0.1
Dividends		(7.0)				(6.3)				(0.7)
Purchase of treasury stock		(3.8)						(3.8)
Ending balance (in shares) at Dec. 31, 2019				15,706,398
Ending balance at Dec. 31, 2019		349.6		$ 15.7	129.8	298.2		(71.1)	(37.0)	14.0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Comprehensive (loss) income		14.1				(4.5)			18.9	(0.3)
Stock-based compensation		6.1			6.1
Restricted stock awards issued (in shares)				447,393
Restricted stock awards issued		0.0		$ 0.4	(0.4)
Restricted stock cancelled (in shares)				(5,000)
Dividends		(3.2)				(3.2)
Purchase of treasury stock		(8.7)						(8.7)
Ending balance (in shares) at Dec. 31, 2020				16,148,791
Ending balance at Dec. 31, 2020		$ 357.9		$ 16.1	$ 135.5	$ 290.5		$ (79.8)	$ (18.1)	$ 13.7

[1] (1) - Includes 52,173 restricted share units converted to common stock.