Note 11 - Income Taxes (Details Textual) - USD ($)		12 Months Ended
	Dec. 31, 2017	Jun. 30, 2019	Jun. 30, 2018
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent		21.00%	27.60%
Income Tax Expense (Benefit), Continuing Operations, Adjustment of Deferred Tax (Asset) Liability	$ 3,323,000		$ 3,322,991
Deferred Tax Assets, Tax Credit Carryforwards, Research		$ 225,000	45,000
Deferred Tax Assets, Operating Loss Carryforwards, State and Local, Recognized During Period		$ 180,000
Oregon Net Operating Loss, Term		4 years
Deferred Tax Assets, Valuation Allowance, Total		$ 3,820,000	4,749,000
Deferred Tax Assets, Capital Loss Carryforwards		2,555,000	2,555,000
Unrecognized Tax Benefits, Ending Balance		586,000	651,000
Unrecognized Tax Benefits, Interest on Income Taxes Accrued		245,000	259,000
Unrecognized Tax Benefits, Income Tax Penalties Accrued		151,000	159,000
Reserve for Unrecognized Tax Benefits, Including Penalties and Interest		982,000	1,069,000
Unrecognized Tax Benefits that Would Impact Effective Tax Rate		586,000	651,000
Unrecognized Tax Benefits, Period Increase (Decrease), Total		65,000	20,000
Unrecognized Tax Benefits, Interest on Income Taxes Expense		14,000	9,000
Unrecognized Tax Benefits, Income Tax Penalties Expense		7,000	35,000
Research Tax Credit Carryforward [Member]
Deferred Tax Assets, Research and Development Credits, Recognized During Period		$ 180,000
Tax Credit Carryforward, Expiration Period		15 years
Virticus [Member]
Deferred Tax Assets, Tax Credit Carryforwards, Research		$ 45,000
Domestic Tax Authority [Member]
Deferred Tax Assets, Operating Loss Carryforwards, Domestic		914,000	$ 187,000
Deferred Tax Assets, Operating Loss Carryforwards, Not Subject to Expiration		727,000
Domestic Tax Authority [Member] | Virticus [Member]
Deferred Tax Assets, Operating Loss Carryforwards, Subject to Expiration		187,000
Operating Loss Carryforwards, Expiration Period			3 years
State and Local Jurisdiction [Member]
Operating Loss Carryforwards and Tax Credit Carryforward		2,374,000	$ 2,194,000
State and Local Jurisdiction [Member] | Oregon State Tax [Member]
Deferred Tax Assets, Operating Loss Carryforwards, State and Local		108,000	108,000
State and Local Jurisdiction [Member] | New York State Division of Taxation and Finance [Member]
Deferred Tax Assets, Operating Loss Carryforwards, State and Local		2,086,000	2,086,000
Deferred Tax Assets, Valuation Allowance, Total		2,086,000	$ 2,086,000
Foreign Tax Authority [Member] | Canada Revenue Agency [Member]
Deferred Tax Assets, Valuation Allowance, Total		1,626,000
Deferred Tax Assets, Capital Loss Carryforwards		$ 929,000