Restricted Unit Awards ("RUAs") (Tables)

9 Months Ended

Sep. 30, 2018

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

Nonvested RUAs

The following table represents nonvested RUAs at and for the nine months ended September 30, 2018 and the year ended December 31, 2017:

	Restricted Units Awarded			Weighted-average Grant- date Fair Value
Nonvested at January 1, 2017		158,304		$	6.03
Granted		283,046			5.74
Vested		(199,281	)		5.85
Nonvested at December 31, 2017		242,069		$	5.83
Granted		309,212			6.31
Nonvested at September 30, 2018		551,281		$	6.10