Annual report pursuant to Section 13 and 15(d)

REGULATORY MATTERS AND CAPITAL (Schedule of Bank Capital and Ratio) (Details)

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REGULATORY MATTERS AND CAPITAL (Schedule of Bank Capital and Ratio) (Details) - USD ($)
$ in Thousands
Dec. 31, 2015
Dec. 31, 2014
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]    
Total capital to risk weighted assets, actual amount $ 816,041 $ 770,585
Total capital to risk weighted assets, actual ratio 12.46% 13.38%
Total capital to risk weighted assets, Required for Capital adequacy purposes, amount $ 523,943 $ 460,738
Total capital to risk weighted assets, required for capital adequacy purposes, ratio 8.00% 8.00%
Tier 1 capital to risk weighted assets, actual amount $ 781,695 $ 734,755
Tier 1 capital to risk weighted assets, actual ratio 11.93% 12.76%
Tier 1 capital to risk weighted assets, required for capital adequacy purposes, amount $ 393,141 $ 230,331
Tier 1 capital ratio of risk-weighted assets 6.00% 4.00%
Tier 1 capital to average adjusted assets, actual amount $ 781,695 $ 734,755
Tier 1 capital to average adjusted assets, actual ratio 10.68% 10.62%
Tier 1 capital to average adjusted assets, required for capital adequacy purposes, amount $ 292,770 $ 276,744
Tier 1 capital to average adjusted assets, required for capital adequacy purposes, ratio 4.00% 4.00%
Common Equity Tier 1 capital to risk weighted assets, actual amount $ 691,195  
Common Equity Tier 1 capital to risk weighted assets, actual ratio 10.55%  
Common Equity Tier 1 capital to risk weighted assets, required for capital adequacy purposes, amount $ 294,823  
Common Equity Tier 1 capital to risk weighted assets, required for capital adequacy purposes, ratio 4.50%  
Union Bank & Trust [Member]    
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]    
Total capital to risk weighted assets, actual amount $ 786,339 $ 744,269
Total capital to risk weighted assets, actual ratio 12.05% 12.98%
Total capital to risk weighted assets, Required for Capital adequacy purposes, amount $ 522,051 $ 458,717
Total capital to risk weighted assets, required for capital adequacy purposes, ratio 8.00% 8.00%
Total capital to risk weighted assets, required in order to be well capitalized under PCA, amount $ 652,563 $ 573,397
Total capital to risk weighted assets, required in order to be well capitalized under PCA, ratio 10.00% 10.00%
Tier 1 capital to risk weighted assets, actual amount $ 751,992 $ 708,453
Tier 1 capital to risk weighted assets, actual ratio 11.52% 12.36%
Tier 1 capital to risk weighted assets, required for capital adequacy purposes, amount $ 391,663 $ 229,273
Tier 1 capital ratio of risk-weighted assets 6.00% 4.00%
Tier 1 capital to risk weighted assets, required in order to be well capitalized under PCA, amount $ 522,217 $ 343,909
Tier 1 capital to risk weighted assets, required in order to be well capitalized under PCA, ratio 8.00% 6.00%
Tier 1 capital to average adjusted assets, actual amount $ 751,992 $ 708,453
Tier 1 capital to average adjusted assets, actual ratio 10.31% 10.29%
Tier 1 capital to average adjusted assets, required for capital adequacy purposes, amount $ 291,752 $ 275,395
Tier 1 capital to average adjusted assets, required for capital adequacy purposes, ratio 4.00% 4.00%
Tier 1 capital to average adjusted assets, required in order to be well capitalized under PCA, amount $ 364,691 $ 344,243
Tier 1 capital to average adjusted assets, required in order to be well capitalized under PCA, ratio 5.00% 5.00%
Common Equity Tier 1 capital to risk weighted assets, actual amount $ 751,992  
Common Equity Tier 1 capital to risk weighted assets, actual ratio 11.52%  
Common Equity Tier 1 capital to risk weighted assets, required for capital adequacy purposes, amount $ 293,747  
Common Equity Tier 1 capital to risk weighted assets, required for capital adequacy purposes, ratio 4.50%  
Common Equity Tier 1 capital to risk weighted assets, required in order to be well capitalized under PCA, amount $ 424,301  
Common Equity Tier 1 capital to risk weighted assets, required in order to be well capitalized under PCA, ratio 6.50%