Note 15 - Accumulated Other Comprehensive Income ("AOCI") (Details) - Components of Accumulated Other Comprehensive Income - USD ($) $ in Thousands		9 Months Ended
		Sep. 30, 2015	Sep. 30, 2014
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance as of January 1, 2015		$ 45,122	$ (64,982)
Other comprehensive income before reclassifications		(21,378)	(3,638)
Amounts reclassified from AOCI (1)	[1]	(38,488)
Net current-period other comprehensive income		(59,866)	(3,638)
Balance as of September 30, 2015		(14,744)	(68,620)
Accumulated Foreign Currency Adjustment Attributable to Parent [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance as of January 1, 2015		329	(90,977)
Other comprehensive income before reclassifications		$ (14,973)	(17,618)
Amounts reclassified from AOCI (1)	[1]
Net current-period other comprehensive income		$ (14,973)	(17,618)
Balance as of September 30, 2015		(14,644)	(108,595)
Accumulated Net Investment Gain (Loss) Attributable to Parent [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance as of January 1, 2015		46,197	25,995
Other comprehensive income before reclassifications		(5,930)	13,980
Amounts reclassified from AOCI (1)	[1]	(38,488)
Net current-period other comprehensive income		(44,418)	13,980
Balance as of September 30, 2015		1,779	$ 39,975
Accumulated Net Gain (Loss) from Cash Flow Hedges Attributable to Parent [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance as of January 1, 2015		(1,404)
Other comprehensive income before reclassifications		$ (475)
Amounts reclassified from AOCI (1)	[1]
Net current-period other comprehensive income		$ (475)
Balance as of September 30, 2015		$ (1,879)

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