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Other comprehensive income
 3 Months Ended
Mar. 31, 2017
Equity [Abstract]  
Other comprehensive income
Other comprehensive income. Changes in the balances of each component of other comprehensive income and the related tax effects are as follows:
 
For the Three Months Ended 
 March 31, 2017
 
For the Three Months Ended 
 March 31, 2016
 
Before-Tax Amount
Tax Expense (Benefit)
Net-of-Tax Amount
 
Before-Tax Amount
Tax Expense (Benefit)
Net-of-Tax Amount
 
($000 omitted)
 
($000 omitted)
Unrealized investment gains on investments - net:
 
 
 
 
 
 
 
Change in net unrealized gains on investments
3,795

1,328

2,467

 
8,906

3,117

5,789

Less: reclassification adjustment for net gains included in net income (loss)
(565
)
(198
)
(367
)
 
(98
)
(34
)
(64
)
 Net unrealized gains
3,230

1,130

2,100

 
8,808

3,083

5,725

 
 
 
 
 
 
 
 
Foreign currency translation adjustments
1,680

355

1,325

 
5,357

2,062

3,295

 
 
 
 
 
 
 
 
Other comprehensive income
4,910

1,485

3,425

 
14,165

5,145

9,020