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Segment Reporting - Summary Financial Information by Reporting Segment (Detail) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended
Mar. 31, 2013
Mar. 31, 2012
Dec. 31, 2012
Segment Reporting Information [Line Items]      
Revenue $ 340,483 $ 431,364  
Operating (Loss) Income (18,101) 47,856  
Total Assets 994,624   1,122,703
CTU [Member]
      
Segment Reporting Information [Line Items]      
Revenue 90,209 96,329  
Operating (Loss) Income 15,912 19,079  
Total Assets 72,047   72,554
AIU [Member]
      
Segment Reporting Information [Line Items]      
Revenue 66,299 88,940  
Operating (Loss) Income 3,146 14,661  
Total Assets 58,524   65,092
University Schools [Member]
      
Segment Reporting Information [Line Items]      
Revenue 156,508 185,269  
Operating (Loss) Income 19,058 33,740  
Total Assets 130,571   137,646
Health Education [Member]
      
Segment Reporting Information [Line Items]      
Revenue 38,021 54,092  
Operating (Loss) Income (11,310) (1,672)  
Total Assets 43,076   52,511
Culinary Arts [Member]
      
Segment Reporting Information [Line Items]      
Revenue 45,938 62,838  
Operating (Loss) Income (12,137) 1,266  
Total Assets 167,166   173,477
Design & Technology [Member]
      
Segment Reporting Information [Line Items]      
Revenue 30,289 41,801  
Operating (Loss) Income (7,156) 334  
Total Assets 30,037   30,720
Career Schools [Member]
      
Segment Reporting Information [Line Items]      
Revenue 114,248 158,731  
Operating (Loss) Income (30,603) (72)  
Total Assets 240,279   256,708
International [Member]
      
Segment Reporting Information [Line Items]      
Revenue 49,677 42,829  
Operating (Loss) Income 13,480 13,125  
Total Assets 264,451   280,636
Corporate and Other [Member]
      
Segment Reporting Information [Line Items]      
Revenue   14  
Operating (Loss) Income (6,368) 12,582  
Total Assets 310,591   385,611
Subtotal [Member]
      
Segment Reporting Information [Line Items]      
Revenue 320,433 386,843  
Operating (Loss) Income (4,433) 59,375  
Total Assets 945,892   1,060,601
Transitional Schools [Member]
      
Segment Reporting Information [Line Items]      
Revenue 20,050 44,521  
Operating (Loss) Income (13,668) (11,519)  
Total Assets 26,373   39,030
Discontinued Operations [Member]
      
Segment Reporting Information [Line Items]      
Total Assets $ 22,359   $ 23,072