Auction Rate Securities - ARS Investments (Detail) (Auction Rate Securities [Member], USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Jun. 30, 2013
Schedule of Available-for-sale Securities [Line Items]
Original Cost Basis	$ 24,000	$ 24,000
Other-than- temporary Impairment in Retained Earnings	(13,614)	(13,833)
New Cost Basis	10,386	10,167
Unrealized Gain/(Loss)	7,150	6,802
Fair Value	17,536	16,969
Student Loans [Member]
Schedule of Available-for-sale Securities [Line Items]
Original Cost Basis	3,500	3,500
Other-than- temporary Impairment in Retained Earnings	(179)	(179)
New Cost Basis	3,321	3,321
Unrealized Gain/(Loss)	(172)	(168)
Fair Value	3,149	3,153
Credit Linked Notes [Member]
Schedule of Available-for-sale Securities [Line Items]
Original Cost Basis	13,500	13,500
Other-than- temporary Impairment in Retained Earnings	(8,352)	(8,571)
New Cost Basis	5,148	4,929
Unrealized Gain/(Loss)	5,318	4,980
Fair Value	10,466	9,909
Preferred Stock [Member]
Schedule of Available-for-sale Securities [Line Items]
Original Cost Basis	5,000	5,000
Other-than- temporary Impairment in Retained Earnings	(5,000)	(5,000)
New Cost Basis
Unrealized Gain/(Loss)	2,000	2,000
Fair Value	2,000	2,000
Municipals [Member]
Schedule of Available-for-sale Securities [Line Items]
Original Cost Basis	2,000	2,000
Other-than- temporary Impairment in Retained Earnings	(83)	(83)
New Cost Basis	1,917	1,917
Unrealized Gain/(Loss)	4	(10)
Fair Value	$ 1,921	$ 1,907