Note 18 - Parent Company Financial Information (Details) - Condensed Statement of Comprehensive Income (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013	Dec. 31, 2012
Note 18 - Parent Company Financial Information (Details) - Condensed Statement of Comprehensive Income [Line Items]
Net income									$ 10,738	$ 11,784
Net income									2,134	3,018
Net income	1,962	2,128	1,894	2,408	2,125	2,074	2,505	2,471	8,392	9,175
Unrealized holding (losses) gains arising during the period									(11,098)	261
Unrealized holding (losses) gains arising during the period									(3,774)	89
Unrealized holding (losses) gains arising during the period									(7,324)	172
Reclassification adjustment for gains included in net income									(824)	(577)
Reclassification adjustment for gains included in net income									(280)	(196)
Reclassification adjustment for gains included in net income									(544)	(381)
Other comprehensive (loss) income									(11,922)	(316)
Other comprehensive (loss) income									(4,054)	(107)
Other comprehensive (loss) income									(7,868)	(209)
Total comprehensive (loss) income									(1,184)	11,468
Total comprehensive (loss) income									(1,708)	2,502
Parent Company [Member]
Note 18 - Parent Company Financial Information (Details) - Condensed Statement of Comprehensive Income [Line Items]
Net income									10,738	11,784
Net income									2,346	2,609
Net income									8,392	9,175
Unrealized holding (losses) gains arising during the period									(11,098)	261
Unrealized holding (losses) gains arising during the period									(3,774)	89
Unrealized holding (losses) gains arising during the period									(7,324)	172
Reclassification adjustment for gains included in net income									(824)	(577)
Reclassification adjustment for gains included in net income									(280)	(196)
Reclassification adjustment for gains included in net income									(544)	(381)
Other comprehensive (loss) income									(11,922)	(316)
Other comprehensive (loss) income									(4,054)	(107)
Other comprehensive (loss) income									(7,868)	(209)
Total comprehensive (loss) income									(1,184)	11,468
Total comprehensive (loss) income									(1,708)	2,502
Total comprehensive (loss) income									$ 524	$ 8,966