Note 18 - Income Taxes (Details) - Foreign Subsidiaries Income Tax Years Open to Examination	12 Months Ended
	Dec. 31, 2014
Minimum [Member] | ISRAEL
Income Tax Examination [Line Items]
Countries	2009
Minimum [Member] | KENYA
Income Tax Examination [Line Items]
Countries	2000
Minimum [Member] | GUATEMALA
Income Tax Examination [Line Items]
Countries	2008
Minimum [Member] | PHILIPPINES
Income Tax Examination [Line Items]
Countries	2008
Minimum [Member] | NEW ZEALAND
Income Tax Examination [Line Items]
Countries	2009
Maximum [Member] | ISRAEL
Income Tax Examination [Line Items]
Countries	2014
Maximum [Member] | KENYA
Income Tax Examination [Line Items]
Countries	2014
Maximum [Member] | GUATEMALA
Income Tax Examination [Line Items]
Countries	2014
Maximum [Member] | PHILIPPINES
Income Tax Examination [Line Items]
Countries	2014
Maximum [Member] | NEW ZEALAND
Income Tax Examination [Line Items]
Countries	2014