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Other comprehensive income (loss) (Tables)
 12 Months Ended
Dec. 31, 2018
Other Comprehensive Income (Loss), Net of Tax [Abstract]  
Other Comprehensive Income (Loss)
The following table summarizes the components of other comprehensive income (loss):
 
 
Year Ending December 31,
 
 
2018
 
2017
 
2016
 
 
(in thousands)
Unrealized (losses) gains arising during the period, before income taxes:
 
 
 
 
 
 
Fixed-maturity securities
 
$
(6,664
)
 
$
5,371

 
$
(2,798
)
Equity securities (1)
 
—

 
4,192

 
1,968

Total unrealized (losses) gains arising during the period, before income taxes
 
(6,664
)
 
9,563

 
(830
)
Income taxes
 
1,399

 
(3,094
)
 
290

Unrealized (losses) gains arising during the period, net of income taxes
 
(5,265
)
 
6,469

 
(540
)
Less reclassification adjustment:
 
 
 
 
 
 
Net realized investment gains on available-for-sale investments
 
258

 
132

 
154

Income taxes
 
(54
)
 
(47
)
 
(54
)
Reclassification adjustment included in net income
 
204

 
85

 
100

Other comprehensive (loss) income
 
$
(5,469
)
 
$
6,384

 
$
(640
)