Earnings Per Share - Schedule of Calculation of Basic and Diluted Net Income Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions		3 Months Ended		9 Months Ended
		Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Numerator:
Net income available to common shareholders	[1]	$ 12.0	$ 5.4	$ 39.7	$ 39.6
Denominator – Weighted-average common shares outstanding (in thousands):
Basic		16,087	15,995	16,062	15,970
Add: dilutive effect of non-vested common shares, restricted stock units and performance shares	[2]	248	159	229	140
Diluted		16,335	16,154	16,291	16,110
Net income per common share, Basic:		$ 0.75	$ 0.34	$ 2.47	$ 2.48
Net income per common share, Diluted:		$ 0.74	$ 0.34	$ 2.44	$ 2.46

[1] Represents Net income less distributed and undistributed earnings allocated to non-vested restricted stock awards that contain non-forfeitable rights to dividends.

[2] Quantities in the following discussion are denoted in whole shares. During the quarter and nine months ended September 30, 2024, approximately 120 and 700 shares, respectively, were excluded from the weighted-average diluted shares computation as their inclusion would have been anti‑dilutive. For the quarter and nine months ended September 30, 2023, approximately 4,800 and 14,000 shares, respectively, were excluded from the weighted-average diluted shares computation as their inclusion would have been anti‑dilutive.