Noncontrolling interest (Tables)

3 Months Ended

Mar. 31, 2018

Noncontrolling Interest [Abstract]

Summary of Activity of Noncontrolling Interest-Redeemable

Balance as of December 31, 2017	$	13,393
Net income attributable to noncontrolling interest-redeemable	2,386
Noncontrolling interest-redeemable distributions	(2,471		)
Acquired noncontrolling interest-redeemable	580
Balance as of March 31, 2018	$	13,888