Quarterly report pursuant to Section 13 or 15(d)

Note 7 - Commitments and Contingencies (Details Textual)

v3.10.0.1
Note 7 - Commitments and Contingencies (Details Textual)
3 Months Ended 6 Months Ended
Jun. 30, 2018
USD ($)
Jun. 30, 2017
USD ($)
Jun. 30, 2018
USD ($)
Jun. 30, 2017
USD ($)
Feb. 01, 2017
USD ($)
ft²
$ / item
Operating Leases, Rent Expense, Total | $ $ 90,000 $ 94,000 $ 228,000 $ 167,000  
Sublease Agreement for Relocation of Headquarters [Member]          
Area of Real Estate Property | ft²         12,400
Operating Leases, Monthly Rent Per Rentable Square Foot During First Year | $ / item         20.5
Operating Leases, Monthly Rent Per Rentable Square Foot During Second Year | $ / item         21.12
Operating Leases, Monthly Rent Per Rentable Square Foot During Third Year | $ / item         21.75
Security Deposit | $         $ 22,000
Operating Leases, Allowance for Certain Improvements | $         $ 88,000