XML 155 R129.htm IDEA: XBRL DOCUMENT v3.20.4

Stock-Based Compensation - Restricted Stock, Restricted Stock Units, and Performance Units Measurement Inputs (Details) - $ / shares	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Performance-based restricted stock units
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions and Methodology
Remaining performance period as of grant date (in years)	2 years 10 months 24 days	2 years 10 months 24 days	2 years 9 months 18 days
Risk-free interest rate (as a percent)	1.40%	2.60%	2.40%
Grant-date fair value (in dollars per share)	$ 11.33	$ 12.91	$ 13.46
Restricted stock, restricted stock units, performance-based restricted stock units, cash-settled restricted stock units and cash-settled performance units
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions and Methodology
Grant-date fair value (in dollars per share)	$ 9.37	$ 10.01	$ 9.66

X

- Definition

The performance period assumption that is used in valuing an award.

+ References

No definition available.

+ Details

Name:	aroc_SharebasedCompensationArrangementbySharebasedPaymentAwardFairValueAssumptionsRemainingPerformancePeriod
Namespace Prefix:	aroc_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(iii)(1)
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

+ Details

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
Namespace Prefix:	us-gaap_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration

X

- References

No definition available.

+ Details

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsAndMethodologyAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The risk-free interest rate assumption that is used in valuing an option on its own shares.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (f)(2)(iv)
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

+ Details

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_AwardTypeAxis=aroc_PerformanceBasedRestrictedStockUnitsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_AwardTypeAxis=aroc_RestrictedStockRestrictedStockUnitsPerformanceUnitsCashSettledRestrictedStockUnitsAndCashSettledPerformanceUnitsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: