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INCOME TAXES (Tables)
 3 Months Ended
Mar. 31, 2019
Income Tax Disclosure [Abstract]  
Reconciliation of income tax expense (benefit)
The actual income tax expense (benefit) for the three months ended March 31, 2019 and 2018 differed from the “expected” income tax expense (benefit) for those periods (computed by applying the United States federal corporate tax rate of 21 percent to income (loss) before income tax) as follows:
 
 
Three months ended 
 March 31,
($ in thousands)
 
2019
 
2018
Computed "expected" income tax expense (benefit)
 
$
8,880

 
$
(111
)
Increases (decreases) in tax resulting from:
 
 
 
 
Tax-exempt interest income
 
(283
)
 
(310
)
Dividends received deduction
 
(132
)
 
(123
)
Proration of tax-exempt interest and dividends received deduction
 
104

 
108

Internal Revenue Code 50(d)(5) income from investment tax credits
 
221

 
36

Other, net
 
(36
)
 
(52
)
Total income tax expense (benefit)
 
$
8,754

 
$
(452
)