Quarterly report pursuant to Section 13 or 15(d)

LOANS AND ALLOWANCE FOR LOAN LOSSES (Summary of Aging of the Acquired with Deteriorated Credit Quality Loan Portfolio by Class) (Details)

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LOANS AND ALLOWANCE FOR LOAN LOSSES (Summary of Aging of the Acquired with Deteriorated Credit Quality Loan Portfolio by Class) (Details) - USD ($)
$ in Thousands
Jun. 30, 2015
Dec. 31, 2014
Jun. 30, 2014
Schedule of purchased impaired commercial and consumer loan portfolios, by class      
Current $ 5,379,529 $ 5,172,879  
Total 87,841 105,788 $ 131,107
Commercial Construction [Member]      
Schedule of purchased impaired commercial and consumer loan portfolios, by class      
Current 373,250 335,715  
Total 2,921 3,782  
Commercial Real Estate - Owner Occupied [Member]      
Schedule of purchased impaired commercial and consumer loan portfolios, by class      
Current 839,904 839,370  
Total 29,838 31,167  
Commercial Real Estate - Non-Owner Occupied [Member]      
Schedule of purchased impaired commercial and consumer loan portfolios, by class      
Current 1,543,757 1,470,076  
Total 20,016 28,869  
Raw Land and Lots [Member]      
Schedule of purchased impaired commercial and consumer loan portfolios, by class      
Current 195,654 201,056  
Total 5,103 7,427  
Single Family Investment Real Estate [Member]      
Schedule of purchased impaired commercial and consumer loan portfolios, by class      
Current 417,548 389,648  
Total 15,504 16,879  
Commercial and Industrial [Member]      
Schedule of purchased impaired commercial and consumer loan portfolios, by class      
Current 444,062 384,307  
Total 3,025 3,855  
Other Commercial [Member]      
Schedule of purchased impaired commercial and consumer loan portfolios, by class      
Current 88,803 78,732  
Total 1,112 2,256  
Indirect Auto [Member]      
Schedule of purchased impaired commercial and consumer loan portfolios, by class      
Current $ 206,120 $ 197,238  
Total      
Mortgage [Member]      
Schedule of purchased impaired commercial and consumer loan portfolios, by class      
Current $ 453,087 $ 447,026  
Total 6,605 7,394  
Consumer Construction [Member]      
Schedule of purchased impaired commercial and consumer loan portfolios, by class      
Current 63,778 72,688  
Total 508 516  
HELOCs [Member]      
Schedule of purchased impaired commercial and consumer loan portfolios, by class      
Current 482,698 493,464  
Total 1,840 2,000  
Other Consumer [Member]      
Schedule of purchased impaired commercial and consumer loan portfolios, by class      
Current 203,046 197,054  
Total 1,369 1,643  
Receivables Acquired with Deteriorated Credit Quality [Member]      
Schedule of purchased impaired commercial and consumer loan portfolios, by class      
30-89 Days Past Due 5,125 6,181  
Greater than 90 Days 7,175 10,013  
Current 75,541 89,594  
Total $ 87,841 $ 105,788  
Receivables Acquired with Deteriorated Credit Quality [Member] | Commercial Construction [Member]      
Schedule of purchased impaired commercial and consumer loan portfolios, by class      
30-89 Days Past Due      
Greater than 90 Days $ 609 $ 652  
Current 2,312 3,130  
Total 2,921 3,782  
Receivables Acquired with Deteriorated Credit Quality [Member] | Commercial Real Estate - Owner Occupied [Member]      
Schedule of purchased impaired commercial and consumer loan portfolios, by class      
30-89 Days Past Due 1,029 1,138  
Greater than 90 Days 1,484 843  
Current 27,325 29,186  
Total 29,838 31,167  
Receivables Acquired with Deteriorated Credit Quality [Member] | Commercial Real Estate - Non-Owner Occupied [Member]      
Schedule of purchased impaired commercial and consumer loan portfolios, by class      
30-89 Days Past Due 1,775 523  
Greater than 90 Days 321 1,255  
Current 17,920 27,091  
Total 20,016 28,869  
Receivables Acquired with Deteriorated Credit Quality [Member] | Raw Land and Lots [Member]      
Schedule of purchased impaired commercial and consumer loan portfolios, by class      
30-89 Days Past Due 376 $ 522  
Greater than 90 Days 105    
Current 4,622 $ 6,905  
Total 5,103 7,427  
Receivables Acquired with Deteriorated Credit Quality [Member] | Single Family Investment Real Estate [Member]      
Schedule of purchased impaired commercial and consumer loan portfolios, by class      
30-89 Days Past Due 425 1,327  
Greater than 90 Days 686 1,311  
Current 14,393 14,241  
Total 15,504 16,879  
Receivables Acquired with Deteriorated Credit Quality [Member] | Commercial and Industrial [Member]      
Schedule of purchased impaired commercial and consumer loan portfolios, by class      
30-89 Days Past Due 226 144  
Greater than 90 Days 68 538  
Current 2,731 3,173  
Total 3,025 3,855  
Receivables Acquired with Deteriorated Credit Quality [Member] | Other Commercial [Member]      
Schedule of purchased impaired commercial and consumer loan portfolios, by class      
30-89 Days Past Due 120 107  
Greater than 90 Days 184 1,133  
Current 808 1,016  
Total 1,112 2,256  
Receivables Acquired with Deteriorated Credit Quality [Member] | Mortgage [Member]      
Schedule of purchased impaired commercial and consumer loan portfolios, by class      
30-89 Days Past Due 916 1,975  
Greater than 90 Days 2,557 2,866  
Current 3,132 2,553  
Total $ 6,605 $ 7,394  
Receivables Acquired with Deteriorated Credit Quality [Member] | Consumer Construction [Member]      
Schedule of purchased impaired commercial and consumer loan portfolios, by class      
30-89 Days Past Due      
Greater than 90 Days $ 508 $ 516  
Current      
Total 508 $ 516  
Receivables Acquired with Deteriorated Credit Quality [Member] | HELOCs [Member]      
Schedule of purchased impaired commercial and consumer loan portfolios, by class      
30-89 Days Past Due 210 356  
Greater than 90 Days 501 728  
Current 1,129 916  
Total 1,840 2,000  
Receivables Acquired with Deteriorated Credit Quality [Member] | Other Consumer [Member]      
Schedule of purchased impaired commercial and consumer loan portfolios, by class      
30-89 Days Past Due 48 89  
Greater than 90 Days 152 171  
Current 1,169 1,383  
Total $ 1,369 $ 1,643