Derivative Instrument and Hedging Activity - Accumulated Derivative Instrument Gain (Loss) Activity (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Balance at beginning of period	$ 167,263	$ 168,331
Balance at end of period	153,399	178,572
Accumulated Derivative Instrument Gain
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Balance at beginning of period	(179)	900
Net change associated with current period hedging transactions	(1,505)	(375)
Balance at end of period	$ (1,684)	$ 525