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Significant Accounting Policies (Details Textual) - USD ($) $ / shares in Units, $ in Thousands | 12 Months Ended
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Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Significant Accounting Policies (Textual) |  |  |
Percentage of tuition revenue in total revenue | 96.00% |  |
Unused books and academic material refundable period | 21 days |  |
Restricted cash |  | $ 200 |
Tuition receivable included in other assets | $ 2,000 | 1,600 |
Expected collection period of tuition receivable | After 12 months |  |
Minimum protective endowment |  | $ 500 |
Common stock, shares authorized | 20,000,000 | 20,000,000 |
Common stock, par value | $ 0.01 | $ 0.01 |
Common stock, shares issued | 11,027,177 | 10,903,341 |
Common stock, shares outstanding | 11,027,177 | 10,903,341 |
Preferred stock, shares authorized | 8,000,000 |  |
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. |  |
Graduation fund estimated to be redeemed | $ 10,000 |  |
Goodwill and intangible assets impairment |  |  |
Depreciation and amortization | $ 18,104 | $ 20,630 | $ 35,563
Impairment loss |  |  |
Maximum [Member] |  |  |
Significant Accounting Policies (Textual) |  |  |
Estimated useful life of property and equipment | 40 years |  |
Minimum [Member] |  |  |
Significant Accounting Policies (Textual) |  |  |
Estimated useful life of property and equipment | 3 years |  |

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