Note 12 - Fair Value (Detail) - Carrying Value of Mortgage Servicing Rights (USD $) In Thousands, unless otherwise specified	3 Months Ended				6 Months Ended
	Jun. 30, 2011		Jun. 30, 2010		Jun. 30, 2011		Jun. 30, 2010
Balance at beginning of period	$ 845		$ 1,197		$ 942		$ 1,238
Balance at end of period	840		1,133		840		1,133
Key economic assumptions used in measuring fair value, at end of period:
Weighted-average prepayment speed	18.70%		16.10%		18.70%		16.10%
Weighted-average discount rate	11.50%		11.40%		11.50%		11.40%
Weighted-average maturity, in months	198.5		205.8		198.5		205.8
Contractual servicing fees earned during the period (1)	60		74		123		158
Total (losses) gains included in earnings (1):
Due to changes in valuation inputs and assumptions (2)	28	[1]	(2)	[1]	(10)	[1]	23	[1]
Other changes in fair value (3)	$ (33)	[2]	$ (62)	[2]	$ (92)	[2]	$ (128)	[2]

[1] Principally reflects changes in prepayment speed assumptions.

[2] Primarily represents changes in expected cash flows over time due to payoffs and paydowns.