Note 9 - Acquisition of Business - Aggregate Consideration (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017	Dec. 01, 2017	Mar. 08, 2016
Goodwill, Ending Balance	$ 16,042	$ 16,032
BAMKO [Member]
Accounts receivable				$ 4,885
Prepaid expenses and other current assets				3,200
Inventories				236
Property, plant and equipment				199
Other assets				100
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill, Total				11,360
Goodwill, Ending Balance				6,994
Total assets				26,974
Accounts payable				1,314
Other current liabilities				736
Total liabilities				$ 2,050
Tangerine [Member]
Accounts receivable			$ 5,051
Prepaid expenses and other current assets			969
Property, plant and equipment			131
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill, Total			6,495
Goodwill, Ending Balance			4,169
Total assets			16,815
Accounts payable			3,374
Other current liabilities			1,353
Total liabilities			$ 4,727