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Institutional Student Loans Past Due (Detail) (USD $)
In Thousands, unless otherwise specified
Sep. 30, 2013
Sep. 30, 2012
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Institutional Student Loans, 30-59 Days Past Due $ 4,283 $ 3,876
Institutional Student Loans, 60-89 Days Past Due 1,725 1,579
Institutional Student Loans, 90-119 Days Past Due 2,068 1,330
Institutional Student Loans, Greater Than 120 Days Past Due 16,353 14,098
Institutional Student Loans, Total Past Due 24,429 20,883
Institutional Student Loans, Current 39,594 35,223
Total Institutional Student Loans $ 64,023 $ 56,106