Consolidated Statement of Shareholders' Equity - USD ($) $ in Millions	Total	Common Stock	Additional Paid-In Capital	Retained Earnings	Treasury Stock	Accumulated Other Comprehensive (Loss) Income	Noncontrolling Interest
Beginning balance (in shares) at Dec. 31, 2013		14,364,239
Beginning balance at Dec. 31, 2013	$ 164.0	$ 14.4	$ 82.4	$ 85.6	$ (26.8)	$ 3.4	$ 5.0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Other comprehensive income (loss)	29.5			45.6		(17.4)	1.3
Share-based compensation	5.8		5.8
Restricted stock awards (in shares)		140,250
Restricted stock awards	0.0	$ 0.1	(0.1)
Restricted stock cancelled (in shares)		(4,668)
Restricted stock cancelled	(0.1)		(0.1)
Performance shares issued (in shares)		14,000
Performance shares issued	0.7		0.7
Dividends	(4.7)			(4.7)
Purchase of treasury stock	(4.4)				(4.4)
Income tax effect of share-based compensation exercises and vesting	1.1		1.1
Ending balance (in shares) at Dec. 31, 2014		14,513,821
Ending balance at Dec. 31, 2014	191.9	$ 14.5	89.8	126.5	(31.2)	(14.0)	6.3
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Other comprehensive income (loss)	32.7			48.1		(16.0)	0.6
Share-based compensation	7.3		7.3
Restricted stock awards (in shares)		72,500
Restricted stock awards	0.0	$ 0.1	(0.1)
Restricted stock cancelled (in shares)		(29,836)
Restricted stock cancelled	0.0
Performance shares issued (in shares)		14,000
Performance shares issued	0.0
Exercise of stock options, Number of Shares (in shares)		83,500
Exercise of stock options	1.2	$ 0.1	1.1
Dividends	(6.3)			(6.3)
Purchase of treasury stock	(15.5)				(15.5)
Income tax effect of share-based compensation exercises and vesting	0.9		0.9
Ending balance (in shares) at Dec. 31, 2015		14,653,985
Ending balance at Dec. 31, 2015	212.2	$ 14.7	99.0	168.3	(46.7)	(30.0)	6.9
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Other comprehensive income (loss)	19.5			31.7		(12.7)	0.5
Share-based compensation	10.6		10.6
Restricted stock awards (in shares)		172,550
Restricted stock awards	0.0	$ 0.2	(0.2)
Restricted stock cancelled (in shares)		(4,000)
Restricted stock cancelled	0.0
Performance shares issued (in shares)		1,500
Performance shares issued	$ 0.0
Exercise of stock options, Number of Shares (in shares)	22,000	22,000
Exercise of stock options	$ 0.5		0.5
Dividends	(6.2)			(6.2)
Purchase of treasury stock	(1.9)				(1.9)
Income tax effect of share-based compensation exercises and vesting	(0.6)		(0.6)
Acquisition	2.1						2.1
Other	(0.2)		(0.5)	(0.2)			0.5
Ending balance (in shares) at Dec. 31, 2016		14,846,035
Ending balance at Dec. 31, 2016	$ 236.0	$ 14.9	$ 108.8	$ 193.6	$ (48.6)	$ (42.7)	$ 10.0