Credit Facility, Maximum Prepayment

No definition available.

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

Extinguishment of debt, premium paid.

+ References

No definition available.

+ Details

Name:	bas_ExtinguishmentOfDebtPremiumPaid
Namespace Prefix:	bas_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Maximum consolidated leverage ratio ceiling.

+ References

No definition available.

+ Details

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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

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

- Definition

Maximum period for redemption on senior note.

+ References

No definition available.

+ Details

Name:	bas_MaximumPeriodForRedemptionOnSeniorNote
Namespace Prefix:	bas_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Minimum amount outstanding after redemption.

+ References

No definition available.

+ Details

Name:	bas_MinimumAmountOutstandingAfterRedemption
Namespace Prefix:	bas_
Data Type:	num:percentItemType
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 redeemable.

+ References

No definition available.

+ Details

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

- Definition

Redemption price percentage of senior note.

+ References

No definition available.

+ Details

Name:	bas_RedemptionPricePercentageOfSeniorNote
Namespace Prefix:	bas_
Data Type:	num:percentItemType
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 SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 20

-Article 5

Reference 2: 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 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 22

-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

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 22

-Article 5

Reference 2: 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(a)(1))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

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

- 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

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 22

-Article 5

Reference 2: 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(a)(2))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ 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 carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.9-03.16)

-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19, 20, 22

-Article 5

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 944

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.7-03.16)

-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

+ Details

Name:	us-gaap_LineOfCredit
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

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 210.5-02.19(b),22(b))

-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 19, 22

-Article 5

+ 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

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

+ 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

-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 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 08

-Paragraph f

-Article 4

Reference 3: 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 4: 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

+ Details

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

- Definition

Write-off of amounts previously capitalized as debt issuance cost in an extinguishment of debt.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.8)

-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688

+ Details

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

- Details

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

- Details

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- Details

Name:	us-gaap_DebtInstrumentAxis=bas_SevenPointSeventyFivePercentageSeniorNotesDueTwoThousandNineteenMember
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- Details

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- Details

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Namespace Prefix:
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Period Type:

- Details

Name:	us-gaap_LongtermDebtTypeAxis=us-gaap_LineOfCreditMember
Namespace Prefix:
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Period Type:

- Details

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Long-Term Debt (Narrative) (Details) (USD $)	12 Months Ended			0 Months Ended	3 Months Ended	0 Months Ended		1 Months Ended	0 Months Ended
Long-Term Debt (Narrative) (Details) (USD $)	Dec. 31, 2014 item	Dec. 31, 2013	Dec. 31, 2012	Dec. 15, 2014	Dec. 31, 2013	Jun. 13, 2011	Feb. 15, 2011	Jul. 31, 2011	Oct. 16, 2012	Nov. 26, 2014	Oct. 31, 2012
Debt Instrument [Line Items]
Senior notes, aggregate principal amount	$ 16,000,000us-gaap_DebtInstrumentCarryingAmount
Total Cash Paid (net of cash acquired)	16,090,000	21,467,000	84,966,000
Minimum consolidated interest coverage ratio floor	2.50
Maximum consolidated leverage ratio ceiling	4.00
Maximum consolidated senior secured leverage ratio	2.00
Revolver	16,000,000us-gaap_LineOfCredit
Borrowings	16,000,000us-gaap_DebtInstrumentCarryingAmount
Letters of credit outstanding under the Credit Agreement	51,300,000
Total Available Credit under the agreement	232,700,000
Minimum Debt service coverage ratio	1.05bas_DebtServicesCoverageRatio
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										300,000,000
7.125% Senior Notes
Debt Instrument [Line Items]
Wrote off unamortized debt issuance costs					1,800,000
7.75% Senior Notes due 2019
Debt Instrument [Line Items]
Issuance of senior notes	464,600,000					200,000,000	275,000,000
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%
Percent redeemable	35.00%
Redemption price percentage of senior note	107.75%
Minimum amount outstanding after redemption	65.00%
Maximum period for redemption on senior note (in days)	90 days
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%
7.125% Senior Notes Due 2016
Debt Instrument [Line Items]
Premium paid											$ 6,100,000