Note 5 - Fair Value - Quantitative Information About Level 3 Fair Value Measurements (Details) - Commercial Real Estate - Other [Member] - Bid Indications [Member] xbrli-pure in Thousands, $ in Thousands	Jun. 30, 2019 USD ($)
Fair Value	$ 59
Measurement Input, Discount Rate [Member]
Discount Rate	0
Measurement Input, Discount Rate [Member] | Weighted Average [Member]
Discount Rate	0