Interest Rate Swaps (Details 2) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2019	Jul. 25, 2019	May 07, 2019	Jul. 06, 2016
Forward-starting Interest Rate Swap 1 [Member]
Derivative [Line Items]
Derivative, Notional Amount				$ 150.0
Forward-starting interest rate swap agreement, effective date	Nov. 20, 2019
Forward-starting interest rate swap agreement, fixed interest rate				1.1425%
Forward-starting interest rate swap agreement, termination date	Nov. 20, 2020
Forward-starting Interest Rate Swap 2 [Member]
Derivative [Line Items]
Derivative, Notional Amount			$ 75.0
Forward-starting interest rate swap agreement, effective date	Nov. 20, 2020
Forward-starting interest rate swap agreement, fixed interest rate			2.0925%
Forward-starting interest rate swap agreement, termination date	Sep. 29, 2022
Forward-starting Interest Rate Swap 3 [Member]
Derivative [Line Items]
Derivative, Notional Amount		$ 75.0
Forward-starting interest rate swap agreement, effective date	Nov. 20, 2020
Forward-starting interest rate swap agreement, fixed interest rate		1.55%
Forward-starting interest rate swap agreement, termination date	Sep. 29, 2022