Statement of Changes in Stockholders' Equity - 3 months ended Mar. 31, 2017 - USD ($) shares in Thousands, $ in Thousands	Common Stock Class A common stock	Common Stock Class B common stock	Treasury Stock Class A common stock	Additional Paid-in-Capital	Retained (Deficit)/ Earnings	Non-controlling Interest	Class A common stock	Total
Balance at Dec. 31, 2016	$ 57	$ 30	$ (358)	$ 447,137	$ (8,652)	$ 453,237		$ 891,451
Balance (in shares) at Dec. 31, 2016	57,025	29,832	23
Increase (Decrease) Stockholders' Equity
Cumulative effect of adoption of ASU 2016-09				706	(706)
Stock-compensation expense				1,941				1,941
Stock-compensation expense (in shares)	168
Cash tax distribution						(562)		(562)
Sale of common stock	$ 1			2,828				2,829
Sale of common stock (in shares)	1,180						1,200
Stock dividends on common stock	$ 5			17,495	(17,500)
Stock dividends on common stock (in shares)	5,000
Dividends and accretion on preferred stock					(2,027)			(2,027)
Net income (loss)					(1,387)	(2,128)		(3,515)
Balance at Mar. 31, 2017	$ 63	$ 30	$ (358)	$ 470,107	$ (30,272)	$ 450,547		$ 890,117
Balance (in shares) at Mar. 31, 2017	63,373	29,832	23