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Restricted Cash (Tables)
12 Months Ended
Dec. 31, 2018
Restricted Cash And Investments [Abstract]  
Restricted Cash Components and Its Secured Investments
December 31,
20182017
(In thousands)
Cash pledged as collateral to other financial institutions to secure:
Derivatives$1,980$1,980
Obligations under agreement of loans sold with recourse1,0501,050
$3,030$3,030