Note 10 - Subsequent Events (Details Textual) - J.P. Morgan Chase Bank, N.A. [Member] - Either LIBO Rate or Prime Rate [Member] - Subsequent Event [Member]	Sep. 26, 2016
Minimum [Member]
Debt Instrument, Basis Spread on Variable Rate	3.50%
Maximum [Member]
Debt Instrument, Basis Spread on Variable Rate	4.00%

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

No definition available.

Name:	us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration