Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Cash Flows From Operating Activities:
Net income (loss)	$ 18.7	$ 6.1	$ 41.7	$ (1.2)
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Depreciation and amortization	1.1	1.2	3.6	3.9
Non-cash interest expense	0.1	0.1	0.2	0.2
Stock-based compensation	0.4	0.4	1.2	1.0
Deferred income taxes	(1.6)		(1.6)
Goodwill impairment				9.5
Restructuring charge				1.5
Changes in operating assets and liabilities:
Trade accounts receivable	4.7	9.7	(31.8)	(25.3)
Inventories, net	(7.8)	0.8	(22.4)	31.7
Trade accounts payable	7.0	5.0	29.2	11.1
Other	(0.3)	2.1	1.7	3.3
Cash provided by continuing operating activities	22.3	25.4	21.8	35.7
Cash used in discontinued operating activities	(0.3)		(0.6)	(0.1)
Total cash provided by operating activities	22.0	25.4	21.2	35.6
Cash Flows From Investing Activities:
Capital expenditures	(0.8)	(0.7)	(1.3)	(1.5)
Proceeds from disposition of assets	1.6		1.6
Total cash provided by (used in) investing activities	0.8	(0.7)	0.3	(1.5)
Cash Flows From Financing Activities:
Repayments of debt, net	(21.2)	(25.7)	(17.1)	(35.5)
Repurchase of shares to satisfy employee tax withholdings			(0.2)
Total cash used in financing activities	(21.2)	(25.7)	(17.3)	(35.5)
Net increase (decrease) in cash and equivalents	1.6	(1.0)	4.2	(1.4)
Cash and equivalents, beginning of period	2.9	1.8	0.3	2.2
Cash and equivalents, end of period	4.5	0.8	4.5	0.8
Supplemental Disclosure of Cash Flow Information:
Interest paid	0.6	0.7	1.8	2.9
Income taxes paid	$ 0.3	$ (0.4)	0.7
Non-cash financing activities:
Assets acquired with debt obligations			$ 1.1	$ 0.2