Annual report pursuant to Section 13 and 15(d)

Note 13 - Subsequent Events (Details Textual)

v3.6.0.2
Note 13 - Subsequent Events (Details Textual) - Subsequent Event [Member]
Jan. 13, 2017
USD ($)
Jan. 01, 2017
USD ($)
a
$ / ft²
Sublease Agreement for Relocation of Headquarters [Member]    
Area of Real Estate Property | a   12,400
Operating Leases of Lessee, Period Following Delivery of Possession Triggering Commencement   120 days
Lessee Leasing Arrangements, Operating Leases, Term of Contract   3 years
Operating Leases, Monthly Rent Per Rentable Square Foot During First Year | $ / ft²   20.5
Operating Leases, Monthly Rent Per Rentable Square Foot During Second Year | $ / ft²   21.12
Operating Leases, Monthly Rent Per Rentable Square Foot During Third Year | $ / ft²   21.75
Security Deposit | $   $ 22,000
Operating Leases, Allowance for Certain Improvements | $   $ 88,000
First Amendment to the 2016 Loan Agreement [Member] | Western Alliance Bank [Member]    
Debt Instrument, Covenant, Unrestricted Cash in Accounts to Indebtedness Ratio 1.25  
First Amendment to the 2016 Loan Agreement [Member] | Western Alliance Bank [Member] | Minimum [Member]    
Debt Instrument, Covenant, Minimum Unrestricted Cash in Accounts | $ $ 2,000,000