Name:	strt_AnnualBenefitAccrualPercentageUnderSupplementalExecutiveRetirementPlan
Namespace Prefix:	strt_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

The date the company's Board of Directors approved a resolution to terminate the qualified retirement plan.

No definition available.

Name:	strt_DateOfApprovalForTerminationOfQualifiedRetirementPlan
Namespace Prefix:	strt_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

This percentage represents the actual historical annualized return over a 15 year period using a target allocation of 70 percent public equity and 30 percent fixed income securities.

No definition available.

Name:	strt_DefinedBenefitPlanAnnualizedReturnsForFifteenYears
Namespace Prefix:	strt_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

This percentage represents the actual historical annualized return over a five year period using a target allocation of 70 percent public equity and 30 percent fixed income securities.

No definition available.

Name:	strt_DefinedBenefitPlanAnnualizedReturnsForFiveYears
Namespace Prefix:	strt_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

This percentage represents the actual historical annualized return over a ten year period using a target allocation of 70 percent public equity and 30 percent fixed income securities.

No definition available.

Name:	strt_DefinedBenefitPlanAnnualizedReturnsForTenYears
Namespace Prefix:	strt_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

This percentage represents the actual historical annualized return over a 30 year period using a target allocation of 70 percent public equity and 30 percent fixed income securities.

No definition available.

Name:	strt_DefinedBenefitPlanAnnualizedReturnsForThirtyYears
Namespace Prefix:	strt_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

This percentage represents the actual historical annualized return over a 25 year period using a target allocation of 70 percent public equity and 30 percent fixed income securities.

No definition available.

Name:	strt_DefinedBenefitPlanAnnualizedReturnsForTwentyFiveYears
Namespace Prefix:	strt_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

This percentage represents the actual historical annualized return over a 20 year period using a target allocation of 70 percent public equity and 30 percent fixed income securities.

No definition available.

Name:	strt_DefinedBenefitPlanAnnualizedReturnsForTwentyYears
Namespace Prefix:	strt_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

Under the defined contribution plan, this percentage represents the percent of annual employee compensation which is eligible for an employer match.

No definition available.

Name:	strt_DefinedContributionPlanMatchingPercentOfCompensation
Namespace Prefix:	strt_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	strt_DisclosurePensionAndOtherPostretirementBenefitsDetailsTextualLineItems
Namespace Prefix:	strt_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

The maximum annual benefit amount available to each retiree for postretirement health benefits under the other postretirement defined benefit plan.

No definition available.

Name:	strt_OtherPostretirementBenefitsAnnualBenefitLimitPerFutureEligibleRetiree
Namespace Prefix:	strt_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

The maximum benefit period, in years, available to each retiree for postretirement health benefits under the other postretirement defined benefit plan.

No definition available.

Name:	strt_OtherPostretirementBenefitsMaximumBenefitPeriod
Namespace Prefix:	strt_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

Under the defined contribution plan, this percentage represents the employer match percentage applied to eligible employee contributions made to the plan in determination of the dollar amount of the employer match; this amount is subject to a limit based on the percent of annual employee compensation which is eligible for an employer match.

No definition available.

Name:	strt_PercentOfEachDollarOfEligibleEmployeeContributionsMatchedByEmployer
Namespace Prefix:	strt_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

In the determination of the defined benefit plan assumption as to the rate of return on plan assets used calculating period end benefit obligation liability; this percentage represents the estimated annualized return for the noted group of securities.

No definition available.

Name:	strt_ReturnAppliedToTargetAllocationInDeterminingExpectedLongTermRateOfReturn
Namespace Prefix:	strt_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

Amount of cash paid related to a settlement of a Supplemental Employee Retirement Plan Benefit Liability.

No definition available.

Name:	strt_SupplementalEmployeeRetirementPlansBenefitObligationSettlementCashPaid
Namespace Prefix:	strt_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

The total amount of cash and securities held by third party trustees in a rabbi trust for the payment of supplemental employee retirement benefits.

No definition available.

Name:	strt_TrustAssets
Namespace Prefix:	strt_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

The vesting percentage of accrued benefits for all retirement plan participants as of the final plan termination date under a plan amendment.

No definition available.

Name:	strt_VestingPercentageOfAccruedBenefitsForRetirementPlanParticipantsAsOfFinalTerminationDate
Namespace Prefix:	strt_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

An assumption as to the rate of return on plan assets reflecting the average rate of earnings expected on the funds invested or to be invested to provide for the benefits included in the benefit obligation.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 30

-Glossary Expected Long-Term Rate of Return on Plan Assets

-URI http://asc.fasb.org/extlink&oid=6512013

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (k)(3)

-URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920

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Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
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Period Type:	duration

1) For defined benefit pension plans, the benefit obligation is the projected benefit obligation, which is the actuarial present value as of a date of all benefits attributed by the pension benefit formula to employee service rendered prior to that date. 2) For other postretirement defined benefit plans, the benefit obligation is the accumulated postretirement benefit obligation, which is the actuarial present value of benefits attributed to employee service rendered to a particular date.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920

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

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Projected Benefit Obligation

-URI http://asc.fasb.org/extlink&oid=6522206

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

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Accumulated Postretirement Benefit Obligation

-URI http://asc.fasb.org/extlink&oid=6503904

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

The assumed health care cost trend rate for the next year used to measure the expected cost of benefits covered by the plan (gross eligible charges). This is based upon the annual rate of change in the cost of health care benefits currently provided by the postretirement benefit plan, due to factors other than changes in the composition of the plan population by age and dependency status.

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

Amount of net gain (loss) recognized in net periodic benefit cost as a result of an irrevocable action that relieves the employer (or the plan) of primary responsibility for a benefit obligation and eliminates significant risks related to the obligation and the assets used to effect the settlement. Examples of transactions that constitute a settlement include, but are not limited to, lump-sum cash payments to plan participants in exchange for their rights to receive specified benefits and purchasing nonparticipating annuity contracts to cover vested benefits.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 30

-Section 15

-Paragraph 6

-Subparagraph (a)(1)

-URI http://asc.fasb.org/extlink&oid=7577095&loc=d3e8001-114927

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (h)(7)

-URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920

Name:	us-gaap_DefinedBenefitPlanRecognizedNetGainLossDueToSettlements1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Amount of employer's best estimate of contributions expected to be paid to the plan during the next fiscal year beginning after the date of the latest statement of financial position.

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

Target allocation of investments of this type to total plan assets presented on a weighted average basis.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (d)(i)

-URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 20

-Section 50

-Paragraph 5

-Subparagraph (c)(i)

-URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e2446-114920

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

The ultimate trend rate for health care costs.