Consolidated Statements of Operations - USD ($) shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Aug. 31, 2019	Aug. 31, 2018	Aug. 31, 2019	Aug. 31, 2018
Income Statement [Abstract]
Net sales	$ 192.4	$ 193.6	$ 567.0	$ 578.5
Cost of goods sold (exclusive of depreciation)	146.1	144.5	434.7	431.3
Gross profit	46.3	49.1	132.3	147.2
Selling, general and administrative	26.6	26.3	85.6	83.4
Depreciation and amortization	7.5	7.8	23.4	22.3
Asset impairments	1.0	9.2	1.0	9.6
(Gain) loss on asset sales	0.1	0.0	4.2	0.0
Restructuring and severance	0.8	0.4	4.9	1.8
Interest expense	5.1	4.7	15.3	14.4
Debt issuance costs write-off	0.2	0.0	0.2	0.8
Merger, acquisition, and integration related expense	5.9	(0.3)	6.1	0.7
Other (income) expense, net	(1.6)	0.6	(2.7)	0.8
Total other costs and expenses	45.4	48.7	129.6	133.8
Income (loss) before income taxes	0.9	0.4	2.7	13.4
Income tax (benefit) expense	0.6	2.3	1.4	(0.3)
Net income (loss)	$ 0.3	$ (1.9)	$ 1.3	$ 13.7
Earnings Per Share
Net income (loss) per share - Basic and Diluted	$ 0.01	$ (0.04)	$ 0.03	$ 0.31
Weighted average shares outstanding - Basic	44.8	44.5	44.8	44.6
Weighted average shares outstanding - Diluted	45.7	44.5	45.6	44.8