CONDENSED CONSOLIDATED STATEMENTS OF EQUITY - USD ($) shares in Thousands, $ in Thousands	Total	Common stock	Additional paid-in capital	Retained earnings	Treasury stock, at cost	Non-controlling interests
Balance (in shares) at Dec. 31, 2020		25,413
Balance at Dec. 31, 2020	$ (82,556)	$ 25,413	$ 141,473	$ 190,383	$ (441,034)	$ 1,209
Increase (Decrease) in Equity
Net loss	(21,915)			(22,002)		87
Distributions to non-controlling interest holders	(1,395)					(1,395)
Share-based compensation expense	1,438		1,438
Issuance of restricted share units and restricted shares	0			(5,905)	5,905
Treasury shares withheld for the payment of tax on restricted share unit and restricted share issuances	(830)			(3,586)	2,756
Balance (in shares) at Mar. 31, 2021		25,413
Balance at Mar. 31, 2021	(105,258)	$ 25,413	142,911	158,890	(432,373)	(99)
Balance (in shares) at Dec. 31, 2021		25,413
Balance at Dec. 31, 2021	(68,870)	$ 25,413	144,298	186,592	(426,445)	1,272
Increase (Decrease) in Equity
Net loss	(12,029)			(12,190)		161
Distributions to non-controlling interest holders	(264)					(264)
Share-based compensation expense	1,290		1,290
Issuance of restricted share units and restricted shares	0			(6,560)	6,560
Treasury shares withheld for the payment of tax on restricted share unit and restricted share issuances	(1,014)			(4,046)	3,032
Balance (in shares) at Mar. 31, 2022		25,413
Balance at Mar. 31, 2022	$ (80,887)	$ 25,413	$ 145,588	$ 163,796	$ (416,853)	$ 1,169