Note 8 Fair Value of Financial Instruments (Tables) |
3 Months Ended | ||||||||||||||||||
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Mar. 31, 2018 | |||||||||||||||||||
| Fair Value Disclosures [Abstract] | |||||||||||||||||||
| Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block] |
The following is the major category of liabilities measured at fair value on a recurring basis as of March 31, 2018, using quoted prices in active markets for identical liabilities (Level 1); significant other observable inputs (Level 2); and significant unobservable inputs (Level 3):
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