Note 4 - Intangible Assets and Goodwill (Details Textual) - USD ($)	6 Months Ended	12 Months Ended
Dec. 31, 2017	Dec. 31, 2018	Jun. 30, 2017
Goodwill, Impairment Loss		$ 13,195,000
Impairment of Intangible Assets (Excluding Goodwill), Total		19,886,000
Amortization of Intangible Assets, Total	$ 68,000	$ 131,000	$ 359,000
Noncompete Agreements [Member]
Impairment of Intangible Assets (Excluding Goodwill), Total			$ 310,000

Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
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Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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-Publisher FASB
-Name Accounting Standards Codification
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