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Significant Accounting Policies (Details Textual) (USD $) In Millions, except Share data, unless otherwise specified | 3 Months Ended |
--- | --- | ---
Mar. 31, 2015 | Dec. 31, 2014
Significant Accounting Policies (Textual) |  |
Percentage of tuition revenue in total revenue | 96.00%stra_PercentageOfTuitionRevenueInRevenue |
Unused books and academic meterial refunadable period | 21 days |
Restricted cash |  | $ 0.2 us-gaap_RestrictedCashAndCashEquivalentsAtCarryingValue
Tuition receivable included in other assets | 1.7 us-gaap_AccountsReceivableNetNoncurrent | 1.6 us-gaap_AccountsReceivableNetNoncurrent
Expected collection period of tuition receivable | After 12 months |
Minimum protective endowment |  | $ 0.5 us-gaap_RestrictedCashAndCashEquivalentsNoncurrent
Common stock, shares authorized | 20,000,000 us-gaap_CommonStockSharesAuthorized | 20,000,000 us-gaap_CommonStockSharesAuthorized
Common stock, par value | $ 0.01 us-gaap_CommonStockParOrStatedValuePerShare | $ 0.01 us-gaap_CommonStockParOrStatedValuePerShare
Common stock, shares issued | 10,974,034 us-gaap_CommonStockSharesIssued | 10,903,341 us-gaap_CommonStockSharesIssued
Common stock, shares outstanding | 10,974,034 us-gaap_CommonStockSharesOutstanding | 10,903,341 us-gaap_CommonStockSharesOutstanding
Preferred stock, shares authorized | 8,000,000 us-gaap_PreferredStockSharesAuthorized |
Preferred stock, shares issued |  |
Preferred stock, shares outstanding |  |
Income tax description | Upon determination, uncertain tax positions are measured to determine the amount of benefit that is greater than 50% likely to be realized upon ultimate settlement with a taxing authority that has full knowledge of all relevant information. A tax position is derecognized if it no longer meets the more likely than not threshold of being sustained. |

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- Definition Amount due from customers or clients, more than one year from the balance sheet date, for goods or services that have been delivered or sold in the normal course of business, reduced to the estimated net realizable fair value by an allowance established by the entity of the amount it deems uncertain of collection. + 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 210.5-02.17) -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 3 -Article 5 + Details
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