Litigation, Commitments and Contingencies (Details) € in Thousands, ¥ in Millions, $ in Millions							1 Months Ended			3 Months Ended					195 Months Ended
	Oct. 10, 2017 USD ($)	Oct. 03, 2017 USD ($)	Sep. 15, 2017 USD ($)	Mar. 29, 2017 employee	Feb. 17, 2017 USD ($)	Apr. 08, 2016 USD ($)	Jan. 31, 2018 USD ($)	Dec. 31, 2015 USD ($)	Dec. 31, 2012 USD ($)	Mar. 31, 2018 JPY (¥) lawsuit	Mar. 31, 2018 EUR (€) lawsuit	Mar. 31, 2018 CAD ($) lawsuit	Mar. 31, 2018 USD ($) employee lawsuit	Mar. 31, 2015 USD ($)	Mar. 31, 2018 USD ($) employee	Dec. 31, 2017 USD ($)	Sep. 28, 2017 USD ($)	Dec. 31, 2013 USD ($)
Loss Contingencies [Line Items]
Reversed accrual														$ 2,800,000
France Copyright Levy
Loss Contingencies [Line Items]
Damages awarded to IOENGINE						$ 17,000,000
Copyright levy accrual													$ 14,400,000		$ 14,400,000			$ 9,500,000
Copyright levy overpaid									$ 55,100,000				55,100,000
Italy Copyright Levy | Cost of sales
Loss Contingencies [Line Items]
Litigation settlement								$ 1,000,000
ECJ Copyright Levy
Loss Contingencies [Line Items]
Copyright levy payment															100,000,000
Copyright levy accrual													5,800,000		5,800,000	$ 5,600,000
IOENGINE Note | Notes Payable, Other Payables
Loss Contingencies [Line Items]
Debt instrument, principal amount																	$ 4,000,000
IOENGINE LLC
Loss Contingencies [Line Items]
Damages awarded to IOENGINE					$ 11,000,000
Payments for legal settlements		$ 3,750,000
CMC Magnetic Corp vs. Imation | Imation Corporation Japan
Loss Contingencies [Line Items]
Damages awarded to IOENGINE			$ 9,200,000
Payments for legal settlements	$ 1,500,000						$ 500,000
Financing receivable, net	1,500,000
CMC Magnetic Corp vs. Imation | Imation Europe B.V.
Loss Contingencies [Line Items]
Damages awarded to IOENGINE	$ 825,000
Suntop Art Work Co., Ltd. vs. Imation | Imation Corporation Japan
Loss Contingencies [Line Items]
Loss contingency, damages sought										¥ 100			920,000
Severance Action
Loss Contingencies [Line Items]
Number of employees filing lawsuit | employee				3
Number of employees terminated | employee				100
Loss contingency, estimate of possible loss													300,000		$ 300,000
Severance Action | Imation Europe B.V.
Loss Contingencies [Line Items]
Loss contingency, damages sought											€ 560		$ 670,000
Loss contingency, number of new claims filed | lawsuit										4	4	4	4
FIAR Case | Imation Europe B.V.
Loss Contingencies [Line Items]
Loss contingency, percentage of plaintiff group										15.00%	15.00%	15.00%	15.00%
Loss contingency, damages sought from all plaintiffs													$ 100,000,000
Canadian Private Copying Collective vs. Imation | Imation Enterprises Corp.
Loss Contingencies [Line Items]
Loss contingency, damages sought												$ 1
Loss contingency, penalties and interests sought, value												$ 5
Nexsan Business | Severance Action
Loss Contingencies [Line Items]
Loss contingency, damages sought													$ 500,000
Number of former executives seeking severance payments | employee													3		3
Minimum | FIAR Case | Imation Europe B.V.
Loss Contingencies [Line Items]
Loss contingency, damages sought													$ 5,000,000
Maximum | FIAR Case | Imation Europe B.V.
Loss Contingencies [Line Items]
Loss contingency, damages sought													$ 10,000,000