Note 10 - Derivative Financial Instruments - Foreign Currency Exchange Contracts (Details) - USD ($)	Mar. 31, 2016	Jun. 30, 2015
Euro Member Countries, Euro
Derivative, Notional Amount	$ 4,479,373	$ 10,134,797
United Kingdom, Pounds
Derivative, Notional Amount	$ 144,853	$ 1,730,542

Aggregate notional amount specified by the derivative(s). Expressed as an absolute value.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Article 12
-Section 13
-Sentence Column B

Name:	invest_DerivativeNotionalAmount
Namespace Prefix:	invest_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	instant