Consolidated Statement of Equity Statement - USD ($) $ in Thousands	Total	Common Stock Par Value	Additional Paid-In Capital	Treasury Stock	Accumulated Other  Comprehensive Income (Loss)	Retained Deficit	Noncontrolling Interest
Balance at beginning of period at Dec. 31, 2019	$ 162,826	$ 1,283	$ 466,959	$ (19,164)	$ (52,183)	$ (362,522)	$ 128,453
Net Income (Loss) Attributable to Parent						(1,551)
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	(10,376)						(8,825)
Translation adjustment, net of taxes	(6,467)				(6,238)		(229)
Comprehensive income (loss)	(16,843)
Dividend	(309)						309
Equity award activity	4	4
Treasury stock activity, net	(89)			(89)
Equity compensation expense	1,373		1,145				228
Other	(31)		(16)				(15)
Balance at end of period at Mar. 31, 2020	146,931	1,287	468,088	(19,253)	(58,421)	(364,073)	119,303
Balance at beginning of period at Dec. 31, 2019	162,826	1,283	466,959	(19,164)	(52,183)	(362,522)	128,453
Net Income (Loss) Attributable to Parent	(22,806)
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	(47,343)
Comprehensive income (loss)	(52,715)
Balance at end of period at Jun. 30, 2020	112,686	1,288	469,777	(19,434)	(57,441)	(385,328)	103,824
Balance at beginning of period at Mar. 31, 2020	146,931	1,287	468,088	(19,253)	(58,421)	(364,073)	119,303
Net Income (Loss) Attributable to Parent	(21,255)					(21,255)
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	(36,967)						(15,712)
Translation adjustment, net of taxes	1,095				980		115
Comprehensive income (loss)	(35,872)
Dividend	(311)						311
Equity award activity	1	1
Treasury stock activity, net	(181)			(181)
Equity compensation expense	2,134		1,685				449
Other	(16)		4				(20)
Balance at end of period at Jun. 30, 2020	112,686	1,288	469,777	(19,434)	(57,441)	(385,328)	103,824
Balance at beginning of period at Dec. 31, 2020	71,062	1,289	472,134	(19,484)	(49,914)	(413,665)	80,702
Net Income (Loss) Attributable to Parent						108,714
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	109,047						333
Translation adjustment, net of taxes	(2,779)						0
Comprehensive income (loss)	106,268
Deconsolidation of CSI Compressco	(75,607)				7,168		(82,775)
Equity award activity	6	6	0
Treasury stock activity, net	(449)			(449)
Equity compensation expense	1,542		962				580
Other	(355)		(574)				219
Balance at end of period at Mar. 31, 2021	102,467	1,295	472,522	(19,933)	(45,525)	(304,951)	(941)
Balance at beginning of period at Dec. 31, 2020	71,062	1,289	472,134	(19,484)	(49,914)	(413,665)	80,702
Net Income (Loss) Attributable to Parent	101,961
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	102,267
Comprehensive income (loss)	101,645
Balance at end of period at Jun. 30, 2021	99,057	1,297	473,872	(19,939)	(43,368)	(311,704)	(1,101)
Balance at beginning of period at Mar. 31, 2021	102,467	1,295	472,522	(19,933)	(45,525)	(304,951)	(941)
Net Income (Loss) Attributable to Parent	(6,753)					(6,753)
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	(6,780)						(27)
Translation adjustment, net of taxes	2,157				2,157		0
Comprehensive income (loss)	(4,623)
Dividend	(119)						(119)
Equity award activity	2	2	0
Treasury stock activity, net	(6)			(6)
Equity compensation expense	1,592		1,592				0
Other	(256)		(242)				(14)
Balance at end of period at Jun. 30, 2021	$ 99,057	$ 1,297	$ 473,872	$ (19,939)	$ (43,368)	$ (311,704)	$ (1,101)