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Estimated title losses (Tables)
 12 Months Ended
Dec. 31, 2016
Loss Contingency [Abstract]  
Summary of Estimated Title Losses
A summary of estimated title losses is as follows:
 
2016
 
2015
 
2014
 
($000 omitted)
Balances at January 1
462,622

 
495,395

 
506,888

Provisions:
 
 
 
 
 
Current year
72,586

 
68,029

 
64,577

Previous policy years
18,561

 
38,236

 
16,728

Total provisions
91,147

 
106,265

 
81,305

Payments, net of recoveries:
 
 
 
 
 
Current year
(18,836
)
 
(19,182
)
 
(18,775
)
Previous policy years
(73,194
)
 
(104,450
)
 
(67,898
)
Total payments, net of recoveries
(92,030
)
 
(123,632
)
 
(86,673
)
Adjustments related to acquired balance
—

 
(2,303
)
 
2,268

Effects of changes in foreign currency exchange rates
833

 
(13,103
)
 
(8,393
)
Balances at December 31
462,572

 
462,622

 
495,395

Loss ratios as a percentage of title operating revenues:
 
 
 
 
 
Current year provisions
3.8
%
 
3.6
%
 
3.8
%
Total provisions
4.8
%
 
5.6
%
 
4.7
%