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Other comprehensive (loss) income
 12 Months Ended
Dec. 31, 2015
Equity [Abstract]  
Other comprehensive (loss) income
Other comprehensive (loss) income. Changes in the balances of each component of other comprehensive (loss) income and the related tax effects are as follows: 
 
For the Year Ended
December 31, 2015
 
For the Year Ended
December 31, 2014
 
For the Year Ended
December 31, 2013
 
Before-Tax
Amount
Tax
Expense
(Benefit)
Net-of-Tax
Amount
 
Before-Tax
Amount
Tax
Expense
(Benefit)
Net-of Tax
 Amount
 
Before-Tax
Amount
Tax 
Expense
(Benefit)
Net-of-Tax
Amount 
 
($000 omitted)
 
 
($000 omitted)
 
 
($000 omitted)
 
Foreign currency translation adjustments
(16,022
)
(4,877
)
(11,145
)
 
(10,405
)
(2,840
)
(7,565
)
 
(10,349
)
(3,530
)
(6,819
)
 
 

 

 

 
 

 

 

 
 

 

 

Unrealized (losses) gains on investments:
 

 

 

 
 

 

 

 
 

 

 

Change in unrealized (losses) gains on investments
(5,757
)
(2,016
)
(3,741
)
 
15,066

5,273

9,793

 
(11,203
)
(3,921
)
(7,282
)
Less: reclassification adjustment for net gains included in net (loss) income
(2,501
)
(875
)
(1,626
)
 
(853
)
(298
)
(555
)
 
(2,463
)
(862
)
(1,601
)
 
 

 

 

 
 

 

 

 
 

 

 

Net unrealized (losses) gains
(8,258
)
(2,891
)
(5,367
)
 
14,213

4,975

9,238

 
(13,666
)
(4,783
)
(8,883
)
 
 

 

 

 
 

 

 

 
 

 

 

Other comprehensive (losses) income
(24,280
)
(7,768
)
(16,512
)
 
3,808

2,135

1,673

 
(24,015
)
(8,313
)
(15,702
)