QUARTERLY FINANCIAL DATA (UNAUDITED) (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Quarterly Financial Information Disclosure [Abstract]
Net sales	$ 273.9	$ 285.7	$ 242.1	$ 227.3	$ 222.2	$ 243.9	$ 248.6	$ 232.2	$ 1,029.0	$ 946.9	$ 896.9
Gross profit	93.1	102.3	84.8	76.7	75.0	84.4	86.0	80.3	356.9	325.7	307.7
Net income from continuing operations	$ 16.4	$ 24.1	$ 15.3	$ 8.3	$ 11.4	$ 13.7	$ 14.9	$ 10.0	$ 64.1	$ 50.0	$ 49.5
Net income per common share from continuing operations:
Net income per share - Basic (in dollars per share)	$ 0.42	$ 0.64	$ 0.41	$ 0.21	$ 0.30	$ 0.36	$ 0.40	$ 0.27	$ 1.72	$ 1.29	$ 6.03
Diluted (in dollars per share)	$ 0.42	$ 0.64	$ 0.40	$ 0.21	$ 0.30	$ 0.36	$ 0.39	$ 0.26	$ 1.71	$ 1.28	$ 5.93