OTHER LONG-TERM ASSETS (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Sep. 30, 2012	Sep. 30, 2011
OTHER LONG-TERM ASSETS [Abstract]
Long-term ARS		$ 7,991	$ 8,041
Other long-term assets		2,872	1,504
Other long-term investments		1,082	827
Total		11,945	10,372
Number of Auction rate securities		2
Number of Auction rate securities, pretax reduction maintained		1
Reduction in fair value Auction Rate Securities, pretax		234
Reduction in fair value Auction Rate Securities, net of tax		151
Monetization of Auction Rate Securities	50
Long-term liability, SERP investments		$ 1,082