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Securities (Securities With Unrealized Losses) (Details) - USD ($)
$ in Thousands
Mar. 31, 2019
Dec. 31, 2018
Schedule of Available-for-sale Securities [Line Items]    
Less than Twelve Months, Fair Value   $ 499
Less than Twelve Months, Unrealized Loss 1
Twelve Months or More, Fair Value 7,437 8,401
Twelve Months or More, Unrealized Loss 62 98
Total, Fair Value 7,437 8,900
Total, Unrealized Loss 62 99
U.S. Treasury [Member]    
Schedule of Available-for-sale Securities [Line Items]    
Less than Twelve Months, Fair Value   499
Less than Twelve Months, Unrealized Loss 1
Twelve Months or More, Fair Value 7,437 8,401
Twelve Months or More, Unrealized Loss 62 98
Total, Fair Value 7,437 8,900
Total, Unrealized Loss $ 62 $ 99