Note 9 - Accumulated Other Comprehensive Income (Detail) - The Balance of and Changes in Each Component of Accumulated Other Comprehensive Income (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Total Accumulated Other Comprehensive Income (Loss)			$ (165)
Current period change	(6)	(1)	(6)	(12)
Total Accumulated Other Comprehensive Income (Loss)	312		312
Gains (Losses) Effective Hedging [Member]
Gains (Losses) on Effective Cash Hedging Derivatives			(1,275)
Current period change			34
Gains (Losses) on Effective Cash Hedging Derivatives	(1,241)		(1,241)
Unrealized Losses OTTI [Member]
Net Unrealized Losses on Investments with OTTI			(1,000)
Current period change			(6)
Net Unrealized Losses on Investments with OTTI	(1,006)		(1,006)
Net Unrealized Investment Gain [Member]
Net Unrealized Investment Gains			2,110
Current period change			449
Net Unrealized Investment Gains	2,559		2,559
Other Comprehensive Income (Loss) [Member]
Total Accumulated Other Comprehensive Income (Loss)			(165)
Current period change			477
Total Accumulated Other Comprehensive Income (Loss)	$ 312		$ 312