Note 2 - Changes in Accumulated Other Comprehensive Income (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2015 USD ($)
Accumulated Foreign Currency Adjustment Attributable to Parent [Member]
Balance, December 31, 2014	$ 62
Other comprehensive income before reclassifications	153
Amounts reclassified out of accumulated other comprehensive income	(82)
Balance, June 30, 2015	$ 133
Accumulated Net Investment Gain (Loss) Attributable to Parent [Member]
Balance, December 31, 2014
Other comprehensive income before reclassifications	$ 2
Amounts reclassified out of accumulated other comprehensive income
Balance, June 30, 2015	$ 2
Balance, December 31, 2014	62
Other comprehensive income before reclassifications	155
Amounts reclassified out of accumulated other comprehensive income	(82)
Balance, June 30, 2015	$ 135