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Supplementary Data on Cash Flows (Tables)
 12 Months Ended
Dec. 31, 2018
Supplemental Cash Flow Elements [Abstract]  
Reconciliation of net income to net cash provided by operating activities A reconciliation of net income to net cash provided by operating activities as presented in the Consolidated Statements of Cash Flows is as follows: 
($ in thousands)
 
Years Ended December 31,
 
 
2018
 
2017
 
2016
Cash flows from operating activities
 
 

 
 

 
 

Net income
 
$
18,343

 
$
169,459

 
$
83,765

Adjustments to reconcile net income to net cash
provided by operating activities:
 
 

 
 

 
 

Net investment (gains) losses
 
12,543

 
3,406

 
(4,123
)
Increase in accrued investment income
 
4,449

 
(3,404
)
 
(2,208
)
Increase (decrease) in accrued expenses
 
(1,088
)
 
(2,240
)
 
4,378

Depreciation and amortization
 
7,357

 
6,615

 
6,896

Increase in insurance liabilities
 
197,472

 
154,061

 
176,315

Increase in premium receivables
 
(10,026
)
 
(12,917
)
 
(11,496
)
Increase in deferred policy acquisition costs
 
(783
)
 
(7,967
)
 
(15,859
)
(Increase) decrease in reinsurance recoverables
 
(21,317
)
 
11

 
(481
)
    Increase (decrease) in income tax liabilities
 
5,971

 
(21,291
)
 
(1,293
)
Other
 
(12,033
)
 
(29,147
)
 
(24,461
)
Total adjustments
 
182,545

 
87,127

 
127,668

Net cash provided by operating activities
 
$
200,888

 
$
256,586

 
$
211,433