Note 4 - Fair Value Measurement - Assets Measured at Fair Value on a Non-recurring Basis (Details) - Repossessed Assets [Member] - USD ($) $ in Millions	Sep. 30, 2016	Jun. 30, 2016
Fair Value, Inputs, Level 1 [Member]
Assets, Fair Value Disclosure, Nonrecurring
Fair Value, Inputs, Level 2 [Member]
Assets, Fair Value Disclosure, Nonrecurring
Fair Value, Inputs, Level 3 [Member]
Assets, Fair Value Disclosure, Nonrecurring	1.3	1.3
Assets, Fair Value Disclosure, Nonrecurring	$ 1.3	$ 1.3