Commitments and Contingencies - Aggregate Amount of Guarantee Payments, Discharge Payments and Payments on Behalf of Borrowers (Detail) (USD $) In Thousands, unless otherwise specified	2 Months Ended	10 Months Ended	12 Months Ended
	Feb. 28, 2013	Dec. 31, 2013	Dec. 31, 2013	Dec. 31, 2012
Schedule of Claims and Contingencies [Line Items]
Payments on Behalf of Borrowers			$ 11,499	$ 2,762
Recoveries from Charged-Off Loans			103	234
PEAKS Program [Member]
Schedule of Claims and Contingencies [Line Items]
PEAKS Guarantee	854	1,559	2,413	12,342
Payments on Behalf of Borrowers	532	10,967	11,499	2,762
Total	1,386	12,526	13,912	15,104
2009 RSA [Member]
Schedule of Claims and Contingencies [Line Items]
Regular Payments			1,791	1,990
Discharge Payments			912	0
Recoveries from Charged-Off Loans			(103)	(234)
Risk Share Agreement [Member]
Schedule of Claims and Contingencies [Line Items]
Payments on Behalf of Borrowers	532	10,967	11,499	2,762
Total	1,386	12,526	16,512	16,860
Risk Share Agreement [Member] | PEAKS Program [Member]
Schedule of Claims and Contingencies [Line Items]
PEAKS Guarantee	854	1,559	2,413	12,342
Risk Share Agreement [Member] | 2009 RSA Regular Payments [Member]
Schedule of Claims and Contingencies [Line Items]
Regular Payments	0	0	1,791	1,990
Risk Share Agreement [Member] | 2009 RSA Discharge Payments [Member]
Schedule of Claims and Contingencies [Line Items]
Discharge Payments	0	0	912	0
Risk Share Agreement [Member] | 2009 RSA [Member]
Schedule of Claims and Contingencies [Line Items]
Recoveries from Charged-Off Loans	$ 0	$ 0	$ (103)	$ (234)