Segment Information - Segment Information (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Segment Reporting Information [Line Items]
Net revenue	$ 178.9	$ 224.4
Operating Income (Loss)	(16.1)	(14.7)
Interest income	(0.1)	0
Interest expense	0.6	0.7
Other, net expense (income)	0.2	(0.2)
Loss from continuing operations before income taxes	(16.8)	(15.2)
Operating Segments
Segment Reporting Information [Line Items]
Operating Income (Loss)	(4.7)	2.9
Corporate and Unallocated
Segment Reporting Information [Line Items]
Operating Income (Loss)	(11.4)	(17.6)
Consumer Storage and Accessories
Segment Reporting Information [Line Items]
Net revenue	100.0	121.8
Consumer Storage and Accessories | Operating Segments
Segment Reporting Information [Line Items]
Operating Income (Loss)	4.1	5.9
Consumer Storage and Accessories | Consumer storage media
Segment Reporting Information [Line Items]
Net revenue	89.5	114.2
Consumer Storage and Accessories | Audio and accessories
Segment Reporting Information [Line Items]
Net revenue	10.5	7.6
Tiered Storage and Security Solutions
Segment Reporting Information [Line Items]
Net revenue	78.9	102.6
Tiered Storage and Security Solutions | Operating Segments
Segment Reporting Information [Line Items]
Operating Income (Loss)	(8.8)	(3.0)
Tiered Storage and Security Solutions | Commercial storage media
Segment Reporting Information [Line Items]
Net revenue	51.4	66.9
Tiered Storage and Security Solutions | Storage and security solutions
Segment Reporting Information [Line Items]
Net revenue	$ 27.5	$ 35.7