Short-Term Borrowings (Details) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2020	Dec. 31, 2019
Short-term Debt [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity		$ 370,000
Line of Credit, Current		252,904	$ 244,190
Line of Credit Facility, Remaining Borrowing Capacity		117,096
Bank Overdrafts	[1]	1,435	3,181
Short-term Debt		254,339	247,371
Short-term Debt, Maximum Amount Outstanding During Period		350,000
Committed Line of Credit Facility Three [Member]
Short-term Debt [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity		45,000
Line of Credit, Current		35,515	42,040
Line of Credit Facility, Remaining Borrowing Capacity		$ 9,485
Debt Instrument, Description of Variable Rate Basis		Lender's base rate, plus 0.75 percent
Committed Line of Credit Facility One [Member]
Short-term Debt [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity		$ 55,000
Line of Credit, Current		55,000	55,000
Line of Credit Facility, Remaining Borrowing Capacity		$ 0
Debt Instrument, Description of Variable Rate Basis		LIBOR rate, plus 0.75 percent
Committed Line of Credit Facility Two [Member]
Short-term Debt [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity		$ 80,000
Line of Credit, Current		72,389	57,150
Line of Credit Facility, Remaining Borrowing Capacity		$ 7,611
Debt Instrument, Description of Variable Rate Basis		LIBOR rate, plus 0.75 percent
Committed Line of Credit Facility Four [Member]
Short-term Debt [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	[2]	$ 150,000
Line of Credit, Current	[2]	50,000	50,000
Line of Credit Facility, Remaining Borrowing Capacity	[2]	$ 100,000
Debt Instrument, Description of Variable Rate Basis		LIBOR rate, plus 1.125 percent
Committed Line of Credit Facility Five [Member]
Short-term Debt [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity		$ 40,000
Line of Credit, Current		40,000	$ 40,000
Line of Credit Facility, Remaining Borrowing Capacity		$ 0
Debt Instrument, Description of Variable Rate Basis		Lender's base rate, plus 0.85 percent

[1] ⁽¹⁾ If presented, these book overdrafts would be funded through the bank revolving credit facilities.

[2] ⁽²⁾ This committed revolving credit facility includes a restriction that our short-term borrowings, excluding any borrowings under the committed revolving credit facility, shall not exceed $350.0 million.