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INCOME TAXES (Tables)
 9 Months Ended
Sep. 30, 2015
Income Tax Disclosure [Abstract]  
Reconciliation of income tax expense (benefit)
The actual income tax expense (benefit) for the three and nine months ended September 30, 2015 and 2014 differed from the “expected” income tax expense for those periods (computed by applying the United States federal corporate tax rate of 35 percent to income before income tax expense) as follows:
 
 
Three months ended 
 September 30,
 
Nine months ended 
 September 30,
($ in thousands)
 
2015
 
2014
 
2015
 
2014
Computed "expected" income tax expense
 
$
5,573

 
$
659

 
$
20,207

 
$
5,965

Increases (decreases) in tax resulting from:
 
 
 
 
 
 
 
 
Tax-exempt interest income
 
(687
)
 
(757
)
 
(2,072
)
 
(2,559
)
Dividends received deduction
 
(266
)
 
(247
)
 
(809
)
 
(725
)
Proration of tax-exempt interest and dividends received deduction
 
143

 
151

 
432

 
493

Other, net
 
(31
)
 
(152
)
 
(292
)
 
30

Total income tax expense (benefit)
 
$
4,732

 
$
(346
)
 
$
17,466

 
$
3,204