Note 12 - Other Comprehensive Income (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Other Comprehensive Income (Loss), Net of Tax [Abstract]
Unrealized foreign currency translation adjustment, net of tax	$ 1	$ (1)	$ (7)	$ 6,519
Less: Reclassification adjustment for net gains (losses) included in net (loss) income	0	(355)	0	27,599
Net foreign currency translation adjustment	1	354	(7)	(21,080)
Unrealized holding gains (losses) arising during the period, net of tax	(1,618)	(23,471)	14,177	(9,856)
Other Comprehensive Income (Loss), Reclassification Adjustment for Sale of Securities Included in Net Income, Net of Tax	(1,189)	1,489	7,680	(33,449)
Net unrealized gains (losses) on investments	(429)	(24,960)	6,497	23,593
Other Comprehensive Income (Loss)	(428)	(24,606)	6,490	2,513
Other Comprehensive Income (Loss) [Member]
Other Comprehensive Income (Loss), before Tax [Abstract]
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, before Tax, Portion Attributable to Parent [Abstract]	1	(1)	(11)	6,519
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Reclassification Adjustment Realized upon Sale or Liquidation, before Tax	0	(605)	0	38,966
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, before Tax	1	604	(11)	(32,447)
Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, before Tax	(2,489)	(23,471)	21,811	(9,856)
Other Comprehensive Income (Loss), Reclassification Adjustment for Sale of Securities Included in Net Income, before Tax	(6,100)	156	7,545	(52,089)
Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, before Tax	3,611	(23,627)	14,266	42,233
Other Comprehensive Income (Loss), before Tax, Portion Attributable to Parent	3,612	(23,023)	14,255	9,786
Other Comprehensive Income (Loss), Tax [Abstract]
Other Comprehensive Income (Loss), Foreign Currency Translation Gain (Loss) Arising During Period, Tax	0	0	(4)	0
Other Comprehensive Income (Loss), Foreign Currency Translation Reclassification Adjustment Realized upon Sale or Liquidation, Tax	0	(250)	0	11,367
Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Tax	0	250	(4)	(11,367)
Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, Tax	(871)	0	7,634	0
Other Comprehensive Income (Loss), Reclassification Adjustment for Sale of Securities Included in Net Income, Tax	(4,911)	(1,333)	(135)	(18,640)
Other Comprehensive Income (Loss), Available-for-sale Securities, Tax	4,040	1,333	7,769	18,640
Other Comprehensive Income (Loss), Tax	4,040	1,583	7,765	7,273
Other Comprehensive Income (Loss), Net of Tax [Abstract]
Unrealized foreign currency translation adjustment, net of tax	1	(1)	(7)	6,519
Less: Reclassification adjustment for net gains (losses) included in net (loss) income	0	(355)	0	27,599
Net foreign currency translation adjustment	1	354	(7)	(21,080)
Unrealized holding gains (losses) arising during the period, net of tax	(1,618)	(23,471)	14,177	(9,856)
Other Comprehensive Income (Loss), Reclassification Adjustment for Sale of Securities Included in Net Income, Net of Tax	(1,189)	1,489	7,680	(33,449)
Net unrealized gains (losses) on investments	(429)	(24,960)	6,497	23,593
Other Comprehensive Income (Loss)	$ (428)	$ (24,606)	$ 6,490	$ 2,513