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Significant Accounting Policies (Tables) | 12 Months Ended
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Dec. 31, 2015
Significant Accounting Policies [Abstract] |
Schedule of graduation fund liability |
|  | Year Ended December 31, |
|  | 2014 |  |  | 2015 |
Balance at beginning of year |  | $ | 1,898 |  |  | $ | 9,706 |
Revenue deferred |  |  | 8,507 |  |  |  | 17,882 |
Benefit redeemed |  |  | (699 | ) |  |  | (6,651 | )
Balance at end of year |  | $ | 9,706 |  |  | $ | 20,937
Schedule of tuition receivable and allowance for doubtful accounts |
|  | 2014 |  |  |  | 2015
Tuition receivable |  | $ | 25,777 |  |  |  |  | $ | 28,543 |
Allowance for doubtful accounts |  |  | (8,835 | ) |  |  |  |  | (10,024 | )
Tuition receivable, net |  | $ | 16,942 |  |  |  |  | $ | 18,519 |
Schedule of allowance for doubtful accounts |
|  | 2013 |  |  |  | 2014 |  |  |  | 2015
Beginning allowance for doubtful accounts |  | $ | 6,596 |  |  |  |  | $ | 10,303 |  |  |  |  | $ | 8,835 |
Additions charged to expense |  |  | 22,225 |  |  |  |  |  | 16,947 |  |  |  |  |  | 13,067 |
Write-offs, net of recoveries |  |  | (18,518 | ) |  |  |  |  | (18,415 | ) |  |  |  |  | (11,878 | )
Ending allowance for doubtful accounts |  | $ | 10,303 |  |  |  |  | $ | 8,835 |  |  |  |  | $ | 10,024 |
Schedule of reconciliation of shares used to calculate basic and diluted earnings per share |
|  | 2013 |  |  |  | 2014 |  |  |  | 2015
Weighted average shares outstanding used to compute basic earnings per share |  | 10,584 |  |  |  | 10,561 |  |  |  | 10,588
Incremental shares issuable upon the assumed exercise of stock options |  | — |  |  |  | 6 |  |  |  | 6
Unvested restricted stock and restricted stock units |  | 40 |  |  |  | 83 |  |  |  | 146
Shares used to compute diluted earnings per share |  | 10,624 |  |  |  | 10,650 |  |  |  | 10,740

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- Definition Tabular disclosure of the various types of trade accounts and notes receivable and for each the gross carrying value, allowance, and net carrying value as of the balance sheet date. Presentation is categorized by current, noncurrent and unclassified receivables. + 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 210.5-02.3,4) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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