Aggregate Commitments Outstanding, Parentage

No definition available.

Name:	bas_AggregateCommitmentsOutstandingParentage
Namespace Prefix:	bas_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Aggregate Commitments Outstanding, Value

+ References

No definition available.

+ Details

Name:	bas_AggregateCommitmentsOutstandingValue
Namespace Prefix:	bas_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Credit Facility, Maximum Prepayment

+ References

No definition available.

+ Details

Name:	bas_CreditFacilityMaximumPrepayment
Namespace Prefix:	bas_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Debt instrument, redemption price.

+ References

No definition available.

+ Details

Name:	bas_DebtInstrumentRedemptionPrice
Namespace Prefix:	bas_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Debt Instrument Repurchase Price Percentage On Principal Amount Plus Accrued And Unpaid Interest Following change Of Control

+ References

No definition available.

+ Details

Name:	bas_DebtInstrumentRepurchasePricePercentageOnPrincipalAmountPlusAccruedAndUnpaidInterestFollowingChangeOfControl
Namespace Prefix:	bas_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Debt Purchase Price Percent Of Principal Amount

+ References

No definition available.

+ Details

Name:	bas_DebtPurchasePricePercentOfPrincipalAmount
Namespace Prefix:	bas_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Debt Services Coverage Ratio

+ References

No definition available.

+ Details

Name:	bas_DebtServicesCoverageRatio
Namespace Prefix:	bas_
Data Type:	xbrli:decimalItemType
Balance Type:	na
Period Type:	instant

- Definition

Maximum Consolidated Fixed Charge Coverage Ratio

+ References

No definition available.

+ Details

Name:	bas_MaximumConsolidatedFixedChargeCoverageRatio
Namespace Prefix:	bas_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	duration

- Definition

Maximum consolidated leverage ratio ceiling.

+ References

No definition available.

+ Details

Name:	bas_MaximumConsolidatedLeverageRatioCeiling
Namespace Prefix:	bas_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	duration

- Definition

Maximum consolidated senior secured leverage ratio.

+ References

No definition available.

+ Details

Name:	bas_MaximumConsolidatedSeniorSecuredLeverageRatio
Namespace Prefix:	bas_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	duration

- Definition

Minimum consolidated interest coverage ratio floor.

+ References

No definition available.

+ Details

Name:	bas_MinimumConsolidatedInterestCoverageRatioFloor
Namespace Prefix:	bas_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of long-term debt before deduction of unamortized discount or premium. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt, with initial maturities beyond one year or the normal operating cycle, if longer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 22
-Article 5

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 20
-Article 5

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 03
-Paragraph 16
-Article 9

+ Details

Name:	us-gaap_DebtInstrumentCarryingAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

+ Details

Name:	us-gaap_DebtInstrumentInterestRateStatedPercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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

- Definition

Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.

+ References

+ Details

Name:	us-gaap_DebtInstrumentMaturityDate
Namespace Prefix:	us-gaap_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- Definition

The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

+ References

No definition available.

+ Details

Name:	us-gaap_LettersOfCreditOutstandingAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The fee, expressed as a percentage of the line of credit facility, for the line of credit facility regardless of whether the facility has been used.

+ References

No definition available.

+ Details

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

- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

+ Details

Name:	us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

+ References

+ Details

Name:	us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Investing Activities
-URI http://asc.fasb.org/extlink&oid=6516133

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 13
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3213-108585

+ Details

Name:	us-gaap_PaymentsToAcquireBusinessesGross
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The cash inflow from a borrowing with the highest claim on the assets of the entity in case of bankruptcy or liquidation (with maturities initially due after one year or beyond the operating cycle, if longer).

+ References

+ Details

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

- Definition

Amount of cash inflow from contractual arrangement with the lender, including but not limited to, letter of credit, standby letter of credit and revolving credit arrangements.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Financing Activities
-URI http://asc.fasb.org/extlink&oid=6513228

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 14
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3255-108585

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(f))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 08
-Paragraph f
-Article 4

+ Details

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

- Details

Name:	us-gaap_CreditFacilityAxis=us-gaap_SecuredDebtMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RangeAxis=us-gaap_MinimumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_VariableRateAxis=bas_AlternateBaseRateLoansMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_VariableRateAxis=us-gaap_EurodollarMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RangeAxis=us-gaap_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LongtermDebtTypeAxis=us-gaap_LineOfCreditMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=bas_SevenPointSeventyFivePercentageSeniorNotesDueTwoThousandNineteenMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_BusinessAcquisitionAxis=bas_MaverickMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=bas_SevenPointSeventyFivePercentageSeniorNotesDueTwoThousandNineteenOnAndAfterFebruaryFifteenTwoThousandFifteenMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=bas_SevenPointSeventyFivePercentageSeniorNotesDueTwoThousandNineteenPriorToFebruaryFifteenTwoThousandFourteenMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=bas_SevenPointSeventyFivePercentageSeniorNotesDueTwoThousandTwentyTwoMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=bas_SeniorNotesDueInTwentyFourteenMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Long-Term Debt (Narrative) (Details)						1 Months Ended	12 Months Ended
Long-Term Debt (Narrative) (Details)	Apr. 21, 2015 USD ($)	Dec. 15, 2014 USD ($)	Oct. 16, 2012 USD ($)	Jun. 13, 2011 USD ($)	Feb. 15, 2011 USD ($)	Jul. 31, 2011 USD ($)	Dec. 31, 2015 USD ($) item	Dec. 31, 2014 USD ($)	Apr. 20, 2015 USD ($)	Nov. 26, 2014 USD ($)
Debt Instrument [Line Items]
Total Cash Paid (net of cash acquired)							$ 16,730,000	$ 16,090,000
Minimum consolidated interest coverage ratio floor							2.50
Maximum consolidated leverage ratio ceiling							4.00
Maximum consolidated senior secured leverage ratio							2.00
Letters of credit outstanding under the Credit Agreement							$ 50,300,000	$ 0
Total Available Credit under the agreement							$ 93,400,000
Minimum Debt service coverage ratio \| item							1.05
Secured Debt [Member]
Debt Instrument [Line Items]
Commitment fee							0.50%
Maximum prepayment		$ 100,000,000
Minimum \| Secured Debt [Member] \| Alternate Base Rate Loans
Debt Instrument [Line Items]
Marginal interest rate							1.25%
Minimum \| Secured Debt [Member] \| Eurodollar [Member]
Debt Instrument [Line Items]
Marginal interest rate							2.25%
Maximum \| Secured Debt [Member] \| Alternate Base Rate Loans
Debt Instrument [Line Items]
Marginal interest rate							2.25%
Maximum \| Secured Debt [Member] \| Eurodollar [Member]
Debt Instrument [Line Items]
Marginal interest rate							3.25%
Amended Revolving Credit Facility
Debt Instrument [Line Items]
Increase in total credit							$ 150,000,000
Amended Revolving Credit Facility \| Secured Debt [Member]
Debt Instrument [Line Items]
Revolving credit facility	$ 250,000,000								$ 300,000,000	$ 300,000,000
Maximum consolidated senior secured leverage ratio	2.50
Maximum consolidated fixed charge coverage ratio	1.00
Aggregate commitments outstanding, parentage	25.00%
Aggregate commitments outstanding	$ 62,500,000
7.75% Senior Notes due 2019
Debt Instrument [Line Items]
Issuance of senior notes				$ 200,000,000	$ 275,000,000		$ 464,600,000
Interest rate					7.75%		7.75%
Debt Instrument, Maturity Date							Feb. 15, 2019
Senior notes, aggregate principal amount							$ 475,000,000
Debt instrument, purchase price as a percentage of principal amount				101.00%	100.00%
Debt instrument, redemption price							100.00%
Debt instrument, repurchase price, percentage on principal amount plus accrued and unpaid interest							101.00%
Borrowings							$ 475,000,000
7.75% Senior Notes due 2019 \| Maverick Companies
Debt Instrument [Line Items]
Total Cash Paid (net of cash acquired)						$ 186,300,000
7.75% Senior Notes Due 2019 on and after February 15 2015 \| Secured Debt [Member]
Debt Instrument [Line Items]
Revolving credit facility					$ 165,000,000
7.75% Senior Notes Due 2019 Prior To February 15 2014 \| Secured Debt [Member]
Debt Instrument [Line Items]
Revolving credit facility					$ 30,000,000
7.75% Senior Notes Due 2022
Debt Instrument [Line Items]
Issuance of senior notes			$ 293,300,000
Interest rate			7.75%
Debt Instrument, Maturity Date							Oct. 15, 2022
Senior notes, aggregate principal amount			$ 300,000,000
Debt instrument, redemption price							100.00%
Debt instrument, repurchase price, percentage on principal amount plus accrued and unpaid interest							101.00%
Borrowings			$ 300,000,000
11.625% Senior Notes Due 2014
Debt Instrument [Line Items]
Interest rate							11.625%