Note 14 - Accumulated Other Comprehensive Income ("AOCI") - Components of Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
Accumulated Foreign Currency Adjustment Attributable to Parent [Member]
Balance	$ 6,616	$ 329
Other comprehensive income before reclassifications	971	(14,973)
Amounts reclassified from AOCI			[1]
Net current-period other comprehensive income	971	(14,973)
Balance	7,587	(14,644)
Accumulated Net Investment Gain (Loss) Attributable to Parent [Member]
Balance	398	46,197
Other comprehensive income before reclassifications	18	(5,930)
Amounts reclassified from AOCI		(38,488)	[1]
Net current-period other comprehensive income	18	(44,418)
Balance	416	1,779
Accumulated Net Gain (Loss) from Cash Flow Hedges Attributable to Parent [Member]
Balance	(1,426)	(1,404)
Other comprehensive income before reclassifications	(432)	(475)
Amounts reclassified from AOCI			[1]
Net current-period other comprehensive income	(432)	(475)
Balance	(1,858)	(1,879)
Balance	5,588	45,122
Other comprehensive income before reclassifications	557	(21,378)
Amounts reclassified from AOCI		(38,488)	[1]
Net current-period other comprehensive income	557	(59,866)
Balance	$ 6,145	$ (14,744)

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