Condensed Consolidated Statement of Shareholders' Equity (Unaudited) - USD ($) shares in Thousands, $ in Millions	Total	Common Stock	Additional Paid-in Capital	Treasury Stock	Retained Earnings	Accumulated Other Comprehensive Income
Beginning balance (in shares) at Dec. 31, 2023		38,074
Beginning balance at Dec. 31, 2023	$ 255.2	$ 0.4	$ 204.8	$ (18.6)	$ 66.0	$ 2.6
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation expense	1.0		1.0
Issuance of restricted stock (in shares)		66
Issuance of restricted stock	0.0		(1.2)	1.2
Stock withheld for employee taxes (in shares)		(37)
Stock withheld for employee taxes	(1.5)		(0.8)	(0.7)
Proceeds from issuance of common stock (in shares)		50
Proceeds from issuance of common stock	1.3		0.4	0.9
Issuance of shares under employee stock purchase plan (in shares)		28
Issuance of shares under employee stock purchase plan	0.8		0.8
Dividends	(9.6)				(9.6)
Change in cumulative translation adjustment	(0.2)					(0.2)
Net income	13.2				13.2
Ending balance (in shares) at Mar. 31, 2024		38,181
Ending balance at Mar. 31, 2024	260.2	$ 0.4	205.0	(17.2)	69.6	2.4
Beginning balance (in shares) at Dec. 31, 2024		38,230
Beginning balance at Dec. 31, 2024	281.1	$ 0.4	207.5	(16.8)	88.6	1.4
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation expense	1.8		1.8
Issuance of restricted stock (in shares)		70
Issuance of restricted stock	0.0		(1.2)	1.2
Stock withheld for employee taxes (in shares)		(28)
Stock withheld for employee taxes	(0.7)		(0.2)	(0.5)
Proceeds from issuance of common stock (in shares)		50
Proceeds from issuance of common stock	1.2		0.3	0.9
Issuance of shares under employee stock purchase plan (in shares)		39
Issuance of shares under employee stock purchase plan	0.8		0.8
Dividends	(10.1)				(10.1)
Change in cumulative translation adjustment	0.2					0.2
Net income	13.6				13.6
Ending balance (in shares) at Mar. 31, 2025		38,361
Ending balance at Mar. 31, 2025	$ 287.9	$ 0.4	$ 209.0	$ (15.2)	$ 92.1	$ 1.6