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Other comprehensive income (loss)
 9 Months Ended
Sep. 30, 2017
Equity [Abstract]  
Other comprehensive income (loss)
Other comprehensive income (loss). Changes in the balances of each component of other comprehensive income (loss) and the related tax effects are as follows:
 
Three Months Ended 
 September 30, 2017
 
Three Months Ended 
 September 30, 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 gains on investments - net:
 
 
 
 
 
 
 
Change in net unrealized gains on investments
95

32

63

 
(405
)
(142
)
(263
)
Less: reclassification adjustment for net gains included in net income
(508
)
(177
)
(331
)
 
(1,330
)
(465
)
(865
)
 Net unrealized gains
(413
)
(145
)
(268
)
 
(1,735
)
(607
)
(1,128
)
 
 
 
 
 
 
 
 
Foreign currency translation adjustments
5,817

1,676

4,141

 
(2,363
)
(555
)
(1,808
)
 
 
 
 
 
 
 
 
Other comprehensive income (loss)
5,404

1,531

3,873

 
(4,098
)
(1,162
)
(2,936
)
 
 
 
 
 
 
 
 
 
Nine Months Ended 
 September 30, 2017
 
Nine Months Ended 
 September 30, 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 gains on investments - net:
 
 
 
 
 
 
 
Change in net unrealized gains on investments
4,438

1,553

2,885

 
18,012

6,304

11,708

Less: reclassification adjustment for net gains included in net income
(1,218
)
(426
)
(792
)
 
(1,606
)
(562
)
(1,044
)
Net unrealized gains
3,220

1,127

2,093

 
16,406

5,742

10,664

 
 
 
 
 
 
 
 
Foreign currency translation adjustments
11,831

3,161

8,670

 
1,581

1,797

(216
)
 
 
 
 
 
 
 
 
Other comprehensive income
15,051

4,288

10,763

 
17,987

7,539

10,448