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Supplementary Data on Cash Flows
 12 Months Ended
Dec. 31, 2017
Supplemental Cash Flow Elements [Abstract]  
Supplementary Data on Cash Flows NOTE 13 - Supplementary Data on Cash Flows
 
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,
 
 
2017
 
2016
 
2015
Cash flows from operating activities
 
 

 
 

 
 

Net income
 
$
169,459

 
$
83,765

 
$
93,482

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

 
 

 
 

Net realized investment (gains) losses
 
3,406

 
(4,123
)
 
(12,713
)
Increase in accrued investment income
 
(3,404
)
 
(2,208
)
 
(2,566
)
Increase (decrease) in accrued expenses
 
(2,240
)
 
4,378

 
(5,798
)
Depreciation and amortization
 
6,615

 
6,896

 
7,734

Increase in insurance liabilities
 
154,061

 
176,315

 
145,313

Increase in premium receivables
 
(12,917
)
 
(11,496
)
 
(8,641
)
Increase in deferred policy acquisition costs
 
(7,967
)
 
(15,859
)
 
(8,981
)
(Increase) decrease in reinsurance recoverables
 
11

 
(481
)
 
(748
)
(Decrease) increase in income tax liabilities
 
(74,487
)
 
(1,293
)
 
8,935

Debt retirement costs
 
—

 
—

 
2,338

Other
 
24,049

 
(24,461
)
 
(10,641
)
Total adjustments
 
87,127

 
127,668

 
114,232

Net cash provided by operating activities
 
$
256,586

 
$
211,433

 
$
207,714