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Short-Term Borrowings (Details)
$ in Millions
6 Months Ended
Jun. 30, 2019
USD ($)
Short-term Debt [Line Items]  
Line of Credit Facility, Maximum Amount Outstanding During Period $ 12.0
London Interbank Offered Rate (LIBOR) [Member]  
Short-term Debt [Line Items]  
Debt Instrument, Basis Spread on Variable Rate 0.75%
Revolving Credit Facility [Member]  
Short-term Debt [Line Items]  
Line of Credit Facility, Amount, Total $ 60.0
Line of Credit, Current $ 12.0
Line of Credit Facility, Interest Rate During Period 3.15%