Note 16 - Commitments and Contingencies (Details Textual)		3 Months Ended		6 Months Ended		12 Months Ended
	Mar. 02, 2018	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)	Jun. 30, 2017 USD ($)	Jun. 30, 2016 USD ($)	Dec. 31, 2017 NZD	Dec. 31, 2017 USD ($)
Expense Waivers						$ 589,093			$ 866,316
Expense Waiver Expense		$ 218,000	$ 490,000	$ 408,000	$ 239,000
Defined Contribution Plan, Employer Discretionary Contribution Amount						$ 84,000	$ 63,000
Class A Share Class [Member]
Fund Expense Ratio, Maximum Threshold, Percent								1.30%	1.30%
Class I Share Class [Member]
Fund Expense Ratio, Maximum Threshold, Percent								0.95%	0.95%
General Security Lease Agreement [Member]
Operating Lease Arrangement, Collateral Amount								NZD 110,000	$ 78,058
Lease Arrangement for Primary Facility [Member]
Operating Lease Arrangement, Collateral Amount								NZD 20,000	$ 14,395
Gourmet Foods [Member] | Leased Factory and Warehouse Located in Tauranga, New Zealand [Member]
Lessor, Operating Lease, Term of Contract				3 years
Lessor, Operating Lease, Renewal Term				3 years
Operating Lease, Monthly Rent				$ 11,474
Brigadier [Member]
Payments for Rent		39,687	38,498	80,049	77,130
Brigadier [Member] | Leased Office and Storage Facilities Located in Saskatoon, Saskatchewan [Member]
Operating Lease, Monthly Rent				4,488
Wainwright [Member] | Leased Office Space in Oakland, California [Member]
Operating Leases, Rent Expense, Net		36,175	$ 36,917	72,340	$ 71,608
The Original Sprout LLC [Member] | Office and Warehouse Space in San Clemente, CA [Member]
Operating Lease, Monthly Rent				$ 7,805
Payments for Rent		$ 2,331
The Original Sprout LLC [Member] | Office and Warehouse Space in San Clemente, CA [Member] | Scenario, Forecast [Member]
Lessee, Operating Lease, Term of Contract	3 years
USCF [Member]
Defined Contribution Plan, Minimum Age Requirement for Participation				21 years
Defined Contribution Plan, Minimum Years of Service Requirement				1 year