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Short-Term Borrowings (Details Textual)
$ in Millions
3 Months Ended
Mar. 31, 2019
USD ($)
Short-term Debt [Line Items]  
Line of Credit Facility, Maximum Amount Outstanding During Period $ 7.7
Revolving Credit Facility [Member]  
Short-term Debt [Line Items]  
Line of Credit Facility, Amount, Total 60.0
Line of Credit, Current $ 3.7
Line of Credit Facility, Interest Rate During Period 3.25%