Condensed Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Statement of Comprehensive Income [Abstract]
Net (loss) income	$ 36,422	$ (22,955)	$ (2,559)	$ 7,150
OTHER COMPREHENSIVE INCOME:
Reclassification of actuarial loss on defined benefit pension plan included in net income (loss)	25	37	73	107
Other comprehensive income before taxes	25	37	73	107
INCOME TAX PROVISION RELATED TO OTHER COMPREHENSIVE INCOME	0	0	0	0
OTHER COMPREHENSIVE INCOME—Net of tax	25	37	73	107
COMPREHENSIVE INCOME (LOSS)	36,447	(22,918)	(2,486)	7,257
LESS COMPREHENSIVE INCOME (LOSS) ATTRIBUTABLE TO NONCONTROLLING INTERESTS	19,467	(12,278)	(1,322)	4,557
COMPREHENSIVE INCOME (LOSS) ATTRIBUTABLE TO THE COMPANY	$ 16,980	$ (10,640)	$ (1,164)	$ 2,700