Regulation (Details)	6 Months Ended
Jun. 30, 2014 years Cohort
Regulation (Textual)
Maximum cohort default rate percentage to pass the metrics under the proposed rule for gainful employment programs	30.00%
Maximum percentage of the estimated annual loan payment to total earnings allowed to pass the metrics under the proposed rule for gainful employment programs	8.00%
Maximum percentage of the estimated annual loan payment to discretionary earnings allowed to pass the metrics under the proposed rule for gainful employment programs	20.00%
Ineligibility period for funding	3 years
Number of years out of three the Company must fail to be ineligible	2
Measurement period for determining ineligibility	3 years
Warning zone period for ineligibility	4 years
Default rate period	3 years
Number of consecutive cohorts of students	3
Maximum default rate	30.00%
Minimum discretionary income rate to establish zone	20.00%
Maximum discretionary income rate to establish zone	30.00%
Minimum annual earnings rate to establish zone	8.00%
Maximum annual earnings rate to establish zone	12.00%

- Definition

Represents the maximum percentage of the annual loan payment of graduates to discretionary earnings allowed to pass the metrics under the proposed rule for gainful employment programs.

+ References

No definition available.

+ Details

Name:	stra_AnnualLoanPaymentToDiscretionaryEarningsRatePecentageMaximum
Namespace Prefix:	stra_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the maximum percentage of the annual loan payment of graduates to total earnings allowed to pass the metrics under the proposed rule for gainful employment programs.

+ References

No definition available.

+ Details

Name:	stra_AnnualLoanPaymentToNetEarningsRatePercentageMaximum
Namespace Prefix:	stra_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the maximum cohort default rate percentage to pass the metrics under the proposed rule for gainful employment programs.

+ References

No definition available.

+ Details

Name:	stra_CohortDefaultRatePercentageMaximum
Namespace Prefix:	stra_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the number of consecutive cohorts of students for which the three-year default rate is greater than or equal to 30%.

+ References

No definition available.

+ Details

Name:	stra_ConsecutiveCohortsOfStudentsForIneligibility
Namespace Prefix:	stra_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the period of time the default rate of three consecutive cohorts of students is greater than or equal to 30% to be ineligible for funding.

+ References

No definition available.

+ Details

Name:	stra_DefaultRatePeriodOfThreeConsecutiveCohortsOfStudentsForIneligibility
Namespace Prefix:	stra_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the period of ineligibility for funding if the entity fails certain metrics.

+ References

No definition available.

+ Details

Name:	stra_IneligibilityPeriod
Namespace Prefix:	stra_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the maximum annual earnings rate used to determine the zone for gainful employment programs.

+ References

No definition available.

+ Details

Name:	stra_MaximumAnnualEarningsRateToEstablishZone
Namespace Prefix:	stra_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the maximum default rate of three consecutive cohorts of students to be eligible for funding.

+ References

No definition available.

+ Details

Name:	stra_MaximumDefaultRateForEligibility
Namespace Prefix:	stra_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the maximum discretionary income rate used to determine the zone for gainful employment programs.

+ References

No definition available.

+ Details

Name:	stra_MaximumDiscretionaryIncomeRateToEstablishZone
Namespace Prefix:	stra_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the period of time used to measure ineligibility for funding based on metrics.

+ References

No definition available.

+ Details

Name:	stra_MetricMeasurementPeriodForIneligibility
Namespace Prefix:	stra_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the minimum annual earnings rate used to determine the zone for gainful employment programs.

+ References

No definition available.

+ Details

Name:	stra_MinimumAnnualEarningsRateToEstablishZone
Namespace Prefix:	stra_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the minimum discretionary income rate used to determine the zone for gainful employment programs.

+ References

No definition available.

+ Details

Name:	stra_MinimumDiscretionaryIncomeRateToEstablishZone
Namespace Prefix:	stra_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the number of years out of three years for the entity to fail a metric for ineligibility of funding.

+ References

No definition available.

+ Details

Name:	stra_NumberOfYearsToFailMetricForIneligibility
Namespace Prefix:	stra_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	stra_RegulationTextualAbstract
Namespace Prefix:	stra_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the period of time of the warning zone for ineligibility.

+ References

No definition available.

+ Details

Name:	stra_WarningZonePeriodForIneligibility
Namespace Prefix:	stra_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration