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Fair Value Measurements and Fair Value of Financial Instruments (Details) - Schedule of fair value no recurring item basis - Municipal Securities [Member] - USD ($)
$ in Thousands
6 Months Ended 12 Months Ended
Jun. 30, 2017
Dec. 31, 2016
Fair value $ 17,983 $ 18,218
Valuation Techniques
Discounted Cash Flows
Discounted Cash Flows
Unobservable Input
 Discount Rate
 Discount Rate
Range 2.80% 2.80%