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ALLOWANCE FOR ESTIMATED LOSSES (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
ALLOWANCE FOR ESTIMATED LOSSES {2}      
Allowance for estimated losses opening balance $ 19,600fil_AllowanceForEstimatedLossesOpeningBalance $ 21,704fil_AllowanceForEstimatedLossesOpeningBalance $ 13,383fil_AllowanceForEstimatedLossesOpeningBalance
Increase (decrease) in provision (1,321)fil_IncreaseDecreaseInProvision (2,104)fil_IncreaseDecreaseInProvision 8,321fil_IncreaseDecreaseInProvision
Allowance for estimated losses closing balance $ 18,279fil_AllowanceForEstimatedLossesClosingBalance $ 19,600fil_AllowanceForEstimatedLossesClosingBalance $ 21,704fil_AllowanceForEstimatedLossesClosingBalance