Derivatives - Narrative (Details) - Interest Rate Swap - USD ($)	1 Months Ended		3 Months Ended
	Nov. 30, 2018	Apr. 30, 2017	Mar. 31, 2019
Derivative [Line Items]
Derivative agreement term	5 years	3 years
Derivative notional amount	$ 139,000,000.0	$ 60,000,000.0
Fixed rate of derivatives (as a percent)	3.09%	1.58%
Quarterly reduction to notional amount			$ 5,000,000.0