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Note 16 - Stockholders' Equity (Tables)
3 Months Ended
Mar. 31, 2014
Stockholders' Equity Note [Abstract]  
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]
   

Three months ended March 31, 2014

   

Three months ended March 31, 2013

 
   

Pre-tax

   

Tax expense

   

Net-of-tax

   

Pre-tax

   

Tax expense

   

Net-of-tax

 
   

(In thousands)

   

(In thousands)

 

Beginning balance, net of tax

                  $ (29,729 )                   $ 465  

Net unrealized gains arising during the period

  $ 19,140     $ 8,047     $ 11,094     $ 7,947     $ 3,343     $ 4,604  

Reclassification adjustment for net securities gains included in net income

    (5,960     (2,506     (3,455     (6,292 )     (2,645 )     (3,647 )

Net unrealized gains arising from transferring securities held-to-maturity to available-for-sale

    -       -       -       38,052       15,997       22,055  

Total other comprehensive income

  $ 13,180     $ 5,541     $ 7,639     $ 39,707     $ 16,695     $ 23,012  

Ending balance, net of tax

                  $ (22,090 )                   $ 23,477