Basis of Presentation (Details)		3 Months Ended		9 Months Ended		12 Months Ended
	Dec. 01, 2015 store	Sep. 30, 2017 USD ($)	Sep. 30, 2016 USD ($)	Sep. 30, 2017 USD ($)	Sep. 30, 2016 USD ($)	Dec. 31, 2015 store	Mar. 31, 2017 USD ($)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net income (loss) included in discontinued operations		$ (2,800,000)	$ (7,400,000)	$ (37,100,000)	$ (35,900,000)
Income from continuing operations		14,100,000	1,600,000	43,700,000	5,400,000
Net sales		319,300,000	290,200,000	934,800,000	874,700,000
SARL Business
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Note receivable from disposition of SARL business		2,200,000		2,200,000			$ 3,300,000
NATG
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net sales included in discontinued operations		0	0	0	12,000,000
Net income (loss) included in discontinued operations		(2,600,000)	(300,000)	(8,700,000)	(21,900,000)
Number of remaining stores | store	3
Number of retail stores closed | store						31
Income from continuing operations		(300,000)	0	(700,000)	(2,400,000)
Financial obligations related to leased facilities, carrying value		57,000,000		57,000,000
Reserve for lease obligations		17,200,000		17,200,000
Financial obligations related to leased facilities		57,000,000		57,000,000
Misco Germany
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Income from continuing operations		(100,000)	(3,000,000)	(300,000)	(4,800,000)
Continuing Operations
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Reclassification of component of cost of sales to selling, distribution and administrative expenses			9,700,000	21,800,000	29,100,000
Continuing Operations | NATG
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Additional reserves for leased facilities		100,000		100,000
Net sales		0	0	0	0
Continuing Operations | Misco Germany
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net sales		0	7,500,000	$ 0	33,900,000
Rebate Processing Business
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Income from continuing operations			(700,000)		(1,700,000)
Net sales			900,000		2,800,000
SARL Business
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Percentage of residual equity position retained				5.00%
Net sales included in discontinued operations		0	124,600,000	$ 117,000,000	390,700,000
Net income (loss) included in discontinued operations		$ (200,000)	$ (7,100,000)	$ (28,400,000)	$ (14,000,000)