Note I - Income Taxes (Details Textual) (USD $)	3 Months Ended	6 Months Ended
	Dec. 31, 2014	Dec. 31, 2014
Income Tax Disclosure [Abstract]
Effective Income Tax Rate Reconciliation, Percent	22.60%	23.80%
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent		34.00%
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount	$ 0	$ 0
Tax Adjustments, Settlements, and Unusual Provisions	$ 0	$ 0
Domestic Tax Authority [Member] | Earliest Tax Year [Member]
Income Tax Disclosure [Abstract]
Open Tax Year		2009
Foreign Tax Authority [Member] | Swiss Federal Tax Administration (FTA) [Member] | Earliest Tax Year [Member]
Income Tax Disclosure [Abstract]
Open Tax Year		2013
State and Local Jurisdiction [Member] | Earliest Tax Year [Member]
Income Tax Disclosure [Abstract]
Open Tax Year		2007