QUARTERLY FINANCIAL DATA (UNAUDITED) (Tables)

12 Months Ended

Dec. 31, 2020

Quarterly Financial Information Disclosure [Abstract]

Summary of Selected Unaudited Quarterly Financial Data

The following is a summary of selected unaudited quarterly financial data for the years ended December 31, 2020 and 2019 (in thousands, except per share data):

	Year Ended December 31, 2020
	First Quarter		Second Quarter		Third Quarter		Fourth Quarter		Total Year
Revenues	$	236,839	$	189,304	$	219,093	$	207,303	$	852,539
Gross margin	$	57,486	$	57,376	$	63,705	$	60,144	$	238,711
Operating income (loss)	$	(212,932)	$	(4,366)	$	2,297	$	(2,361)	$	(217,362)
Income (loss) from continuing operations	$	(199,727)	$	(13,528)	$	(9,073)	$	(14,875)	$	(237,203)
Net income (loss)	$	(199,727)	$	(13,528)	$	(9,073)	$	(14,875)	$	(237,203)
Basic and diluted earnings (loss) per share:
Net income (loss)	$	(6.54)	$	(0.44)	$	(0.30)	$	(0.48)	$	(7.74)

	Year Ended December 31, 2019
	First Quarter		Second Quarter		Third Quarter		Fourth Quarter		Total Year
Revenues	$	269,599	$	315,829	$	290,079	$	287,807	$	1,163,314
Gross margin	$	65,947	$	94,597	$	83,035	$	84,165	$	327,744
Operating income (loss)	$	(16,528)	$	13,004	$	(1,840)	$	3,218	$	(2,146)
Income (loss) from continuing operations	$	(24,228)	$	6,102	$	(7,057)	$	(7,234)	$	(32,417)
Net income (loss)	$	(24,228)	$	6,102	$	(7,057)	$	(7,234)	$	(32,417)
Basic and diluted earnings (loss) per share:
Net income (loss)	$	(0.80)	$	0.20	$	(0.23)	$	(0.24)	$	(1.07)