The aggregate amount of write-downs for impairments recognized during the period for long lived assets held for use (including those held for disposal by means other than sale).

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3602-108585

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=109226691&loc=d3e2921-110230

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 45
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=123351718&loc=d3e2420-110228

Name:	us-gaap_ImpairmentOfLongLivedAssetsHeldForUse
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Reduction in Value of Assets (Details) - USD ($) $ in Thousands	1 Months Ended	3 Months Ended		6 Months Ended	8 Months Ended	9 Months Ended
	Feb. 02, 2021	Sep. 30, 2021	Sep. 30, 2020	Jun. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Reduction In Value Of Assets And Impairments [Line Items]
Reduction in value of long-lived assets	$ 0	$ 0	$ 2,929	$ 16,500	$ 0	$ 19,451
Production Services [Member]
Reduction In Value Of Assets And Impairments [Line Items]
Reduction in value of long-lived assets			0			4,096
Technical Solutions [Member]
Reduction In Value Of Assets And Impairments [Line Items]
Reduction in value of long-lived assets			$ 2,929			$ 15,355