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U.S. Government Securities (Tables)
3 Months Ended
Mar. 31, 2019
Investments, Debt and Equity Securities [Abstract]  
Summary of the carrying value and the fair value of securities
The following table summarizes the carrying value and fair value of the Company’s securities by the contractual maturity date March 31, 2019:
Carrying ValueFair Value
Due in 1 year$4,274 $4,281 
Due in 1 year through 5 years140,718 143,632 
TOTAL$144,992 $147,913