XML 38 R51.htm IDEA: XBRL DOCUMENT
v3.19.3

Revenue Recognition - Graduation Fund (Details) - USD ($) $ in Thousands | 9 Months Ended
--- | ---
Sep. 30, 2019 | Sep. 30, 2018
Contract liability [Roll Forward] |  |
Balance at beginning of period | $ 43,329 | $ 37,400
Revenue deferred | 21,358 | 18,791
Benefit redeemed | (17,947) | (15,792)
Balance at end of period | $ 46,740 | $ 40,399

X
- Definition Current year redemptions of graduation fund credits by students. + References No definition available. + Details
Name: | stra_BenefitRedeemed
Namespace Prefix: | stra_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Contract liability [Roll Forward] + References No definition available. + Details
Name: | stra_ContractliabilityRollForward
Namespace Prefix: | stra_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Carrying amount (including both current and noncurrent portions of the accrual) as of the balance sheet date pertaining to graduation fund liability. + References No definition available. + Details
Name: | stra_GraduationFundLiability
Namespace Prefix: | stra_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Additional graduation fund liability generated in the current year for services to be performed in the future. + References No definition available. + Details
Name: | stra_RevenueDeferred
Namespace Prefix: | stra_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration