Consolidated Statement Of Operations Consolidated Statement of Operations (Parenthetical) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2018	Mar. 31, 2017
Consolidated Statement of Operations (Parenthetical) [Abstract]
Management fee rebate	[1]	$ 275	$ 0

[1] See Note 9 for further details on management fee rebates.