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FINANCING RECEIVABLES (Institutional Student Loans Past Due) (Detail) (USD $)
In Thousands, unless otherwise specified
Mar. 31, 2015
Mar. 31, 2014
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Institutional Student Loans, 30-59 Days Past Due $ 4,321us-gaap_FinancingReceivableRecordedInvestment30To59DaysPastDue $ 5,652us-gaap_FinancingReceivableRecordedInvestment30To59DaysPastDue
Institutional Student Loans, 60-89 Days Past Due 1,554us-gaap_FinancingReceivableRecordedInvestment60To89DaysPastDue 1,169us-gaap_FinancingReceivableRecordedInvestment60To89DaysPastDue
Institutional Student Loans, 90-119 Days Past Due 1,217dv_FinancingReceivableRecordedInvestmentNinetyToOneHundredNineteenDaysPastDue 1,077dv_FinancingReceivableRecordedInvestmentNinetyToOneHundredNineteenDaysPastDue
Institutional Student Loans, Greater Than 120 Days Past Due 17,626dv_FinancingReceivableRecordedInvestmentGreaterThanOneHundredTwentyDaysPastDue 15,783dv_FinancingReceivableRecordedInvestmentGreaterThanOneHundredTwentyDaysPastDue
Institutional Student Loans, Total Past Due 24,718us-gaap_FinancingReceivableRecordedInvestmentPastDue 23,681us-gaap_FinancingReceivableRecordedInvestmentPastDue
Institutional Student Loans, Current 42,481us-gaap_FinancingReceivableRecordedInvestmentCurrent 39,622us-gaap_FinancingReceivableRecordedInvestmentCurrent
Total Institutional Student Loans $ 67,199us-gaap_NotesReceivableGross $ 63,303us-gaap_NotesReceivableGross