Note 11 - Purchase of Interests in Subsidiaries - Assets and Liabilities Acquired (Details) - USD ($) $ in Thousands	Jan. 09, 2018	Sep. 30, 2018	Dec. 31, 2017
Residual goodwill		$ 3,783	$ 1,836
Resource Plus, Inc [Member]
Cash consideration	$ 456
Notes payable	2,300
Total consideration paid	2,756
Cash and cash equivalents	1,223
Accounts receivable	2,699
Accounts payable	(255)
Property and equipment	155
Prepaid assets	86
Marketable securities	20
Other assets	50
Accrued expenses	(1,389)
Deferred tax liability	(572)
Revolving line of credit	(865)
Other intangible assets	2,290
Residual goodwill	1,962
Estimated fair value of assets acquired	5,404
Non-controlling interest	(2,648)
Consideration paid for acquisition	$ 2,756