CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - 3 months ended Mar. 31, 2020 - USD ($) shares in Thousands, $ in Thousands	Common Stock	Additional Paid-In Capital	Accumulated Other Comprehensive Income (loss)	Accumulated Deficit	Noncontrolling Interest	Total
Balance at Dec. 31, 2019	$ 1,013	$ 1,258,859	$ 27	$ (946,404)	$ 28,621	$ 342,116	[1]
Balance (in shares) at Dec. 31, 2019	101,288					101,288
Increase (Decrease) in Stockholders' Equity
Distributions to noncontrolling interest	$ 0	0	0	0	(15,810)	$ (15,810)
Exercise of stock options, and issuance of common stock units and stock awards, net of repurchase of shares to satisfy tax withholding	$ 0	170	0	0	0	170
Exercise of stock options, and issuance of common stock units and stock awards, net of repurchase of shares to satisfy tax withholding (in shares)	32
Stock-based compensation	$ 0	435	0	0	0	435
Net income	0	0	0	65,437	13,515	78,952
Other comprehensive income	0	0	6	0	0	6
Balance at Mar. 31, 2020	$ 1,013	$ 1,259,464	$ 33	$ (880,967)	$ 26,326	$ 405,869
Balance (in shares) at Mar. 31, 2020	101,320					101,320

[1] Consolidated balance sheet as of December 31, 2019 has been derived from audited consolidated financial statements.