Note 9 - Income Taxes (Details Textual) - USD ($) $ in Millions		4 Months Ended	18 Months Ended	24 Months Ended
Jul. 25, 2011	Jun. 03, 2013	Feb. 05, 2013	Jun. 01, 2015	Dec. 31, 2016
Operating Loss Carryforwards	$ 90.0	$ 34.0	$ 34.0	$ 31.0	$ 85.6
Operating Loss Carry Forwards, Limitation on Use	$ 4.9	$ 1.5	$ 1.4	$ 1.6

Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=65882285&loc=d3e32559-109319

Name:	us-gaap_OperatingLossCarryforwards
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant