Note 4 - Acquisition and Divestiture - Net Purchase Price Allocation (Details) (Parentheticals) - USD ($) $ in Thousands	Dec. 31, 2018	Jul. 27, 2017
Healthcare Staffing, Inc. [Member]
Long-term debt, current portion	$ (426)	$ (426)

Amount of long-term debt due within one year or within the normal operating cycle, if longer, assumed at the acquisition date.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=84161108&loc=d3e4845-128472

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