Subsequent Events - Schedule of Financial Highlights (Parenthetical) (Details)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Subsequent Events [Abstract]
Excluding incentive fee waiver, the ratio of operating expenses to average net assets	5.46%	5.39%
Excluding incentive fee waiver, ratio of total expenses to average net assets	8.26%	8.45%