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		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Total Accumulated Other Comprehensive Income (Loss)			$ (165)
Current period change	5	1	11	13
Current period change	(5)	(1)	(11)	(13)
Total Accumulated Other Comprehensive Income (Loss)	923		923
Gains (Losses) Effective Hedging [Member]
Gains (Losses) on Effective Cash Hedging Derivatives			(1,275)
Current period change			42
Current period change			(42)
Gains (Losses) on Effective Cash Hedging Derivatives	(1,233)		(1,233)
Unrealized Losses OTTI [Member]
Net Unrealized Losses on Investments with OTTI			(1,000)
Current period change			11
Current period change			(11)
Net Unrealized Losses on Investments with OTTI	(1,011)		(1,011)
Net Unrealized Investment Gain [Member]
Net Unrealized Investment Gains			2,110
Current period change			1,057
Current period change			(1,057)
Net Unrealized Investment Gains	3,167		3,167
Other Comprehensive Income (Loss) [Member]
Total Accumulated Other Comprehensive Income (Loss)			(165)
Current period change			1,088
Current period change			(1,088)
Total Accumulated Other Comprehensive Income (Loss)	$ 923		$ 923