INVESTMENTS - Gross Unrealized Losses and Fair Values of Available-For-Sale Investment Securities with Unrealized Losses (Detail) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Jun. 30, 2012
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities, Continuous Unrealized Loss Position, Less Than Twelve Months, Fair Value	$ 4,921	$ 4,962
Available-for-sale Securities, Continuous Unrealized Loss Position, Less Than 12 Months, Gross Unrealized Losses	(137)	(245)
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Greater, Fair Value	85
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Greater, Gross Unrealized Losses	(54)
Available-for-Sale Securities, Continuous Unrealized Loss Position, Fair Value	5,006	4,962
Available-for-sale Securities, Continuous Unrealized Loss Position, Gross Unrealized Losses, Total	(191)	(245)
Common stock [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities, Continuous Unrealized Loss Position, Less Than Twelve Months, Fair Value	55	135
Available-for-sale Securities, Continuous Unrealized Loss Position, Less Than 12 Months, Gross Unrealized Losses	(3)	(52)
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Greater, Fair Value	77
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Greater, Gross Unrealized Losses	(52)
Available-for-Sale Securities, Continuous Unrealized Loss Position, Fair Value	132	135
Available-for-sale Securities, Continuous Unrealized Loss Position, Gross Unrealized Losses, Total	(55)	(52)
Offshore fund [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities, Continuous Unrealized Loss Position, Less Than Twelve Months, Fair Value	4,866	4,811
Available-for-sale Securities, Continuous Unrealized Loss Position, Less Than 12 Months, Gross Unrealized Losses	(134)	(189)
Available-for-Sale Securities, Continuous Unrealized Loss Position, Fair Value	4,866	4,811
Available-for-sale Securities, Continuous Unrealized Loss Position, Gross Unrealized Losses, Total	(134)	(189)
Mutual funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities, Continuous Unrealized Loss Position, Less Than Twelve Months, Fair Value		16
Available-for-sale Securities, Continuous Unrealized Loss Position, Less Than 12 Months, Gross Unrealized Losses		(4)
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Greater, Fair Value	8
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Greater, Gross Unrealized Losses	(2)
Available-for-Sale Securities, Continuous Unrealized Loss Position, Fair Value	8	16
Available-for-sale Securities, Continuous Unrealized Loss Position, Gross Unrealized Losses, Total	$ (2)	$ (4)