Consolidated Statements of Stockholders' Equity - 3 months ended Mar. 31, 2017 - USD ($) $ in Thousands	Additional paid-in capital	Retained earnings	Accumulated other comprehensive income (loss)	Non-controlling interest	Common Class A	Common Class B	Total
Beginning balance, Value at Dec. 31, 2016	$ 447,001	$ 16,808	$ (28)	$ (403,074)	$ 2		$ 60,709
Beginning balance, Shares at Dec. 31, 2016					17,652,548	1
Net income		4,912		5,159			10,071
Distributions paid to non-controlling unitholders				(5,849)			(5,849)
Equity-based compensation, value	562						562
Equity-based compensation, shares					38,709
Dividends to Class A common stockholders		(3,184)					(3,184)
Change in accumulated other comprehensive income (loss)			44	51			95
Payroll taxes related to net settled restricted stock units	(450)						(450)
Payroll taxes related to net settled restricted stock units (in shares)					(7,828)
Ending balance, Value at Mar. 31, 2017	$ 447,113	$ 18,536	$ 16	$ (403,713)	$ 2		$ 61,954
Ending balance, Shares at Mar. 31, 2017					17,683,429	1