Note 13 - Components of Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2016	Mar. 31, 2015
Accumulated Foreign Currency Adjustment Attributable to Parent [Member]
Balance		$ 6,616	$ 329
Other comprehensive income before reclassifications		$ 2,510	(9,532)
Amounts reclassified from AOCI	[1]
Net current-period other comprehensive income		$ 2,510	(9,532)
Balance		9,126	(9,203)
Accumulated Net Investment Gain (Loss) Attributable to Parent [Member]
Balance		398	46,197
Other comprehensive income before reclassifications		$ 2	15,718
Amounts reclassified from AOCI	[1]
Net current-period other comprehensive income		$ 2	15,718
Balance		400	61,915
Accumulated Net Gain (Loss) from Cash Flow Hedges Attributable to Parent [Member]
Balance		(1,426)	(1,404)
Other comprehensive income before reclassifications		$ (604)	(352)
Amounts reclassified from AOCI	[1]
Net current-period other comprehensive income		$ (604)	(352)
Balance		(2,030)	(1,756)
Balance		5,588	45,122
Other comprehensive income before reclassifications		$ 1,908	5,834
Amounts reclassified from AOCI	[1]
Net current-period other comprehensive income		$ 1,908	5,834
Balance		$ 7,496	$ 50,956

[1] Amounts reclassified to Interest, dividends and other investment income on the Company’s Condensed Consolidated Statements of Income.