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Restricted Cash (Narrative) (Details) - USD ($)
$ in Thousands
Sep. 30, 2017
Dec. 31, 2016
Restricted Cash And Cash Equivalents Items Line Items    
Certificates Of Deposits Oriental International Banking $ 300 $ 300
Treasury Bill, Oriental Overseas Unit 325  
Reserve required by local Goverment 167,300 161,000
Deposit pledged as collateral 3,030 3,030
Derivative    
Restricted Cash And Cash Equivalents Items Line Items    
Deposit pledged as collateral 1,980 1,980
Residential Loans Sold with Recourse [Member]    
Restricted Cash And Cash Equivalents Items Line Items    
Deposit pledged as collateral $ 1,050 $ 1,050