FAIR VALUE MEASUREMENTS (Details) - Recurring basis $ in Thousands	Sep. 30, 2015 USD ($)
Other long-term assets:
Total assets at fair value	$ 18,141
Money Market Mutual Funds
Other long-term assets:
Money Market Mutual Funds	124
Mutual Fund Large U.S. Equity
Other long-term assets:
Equity securities, available-for-sale:	1,881
Mutual Fund Small/Mid U.S. Equity
Other long-term assets:
Equity securities, available-for-sale:	2,132
Mutual Fund International
Other long-term assets:
Equity securities, available-for-sale:	798
Mutual Fund Balanced
Other long-term assets:
Equity securities, available-for-sale:	709
Mutual Fund Fixed Income
Other long-term assets:
Equity securities, available-for-sale:	746
RealD Inc. | Common Stock
Other long-term assets:
Equity securities, available-for-sale:	11,751
Quoted prices in active market (Level 1)
Other long-term assets:
Total assets at fair value	18,141
Quoted prices in active market (Level 1) | Money Market Mutual Funds
Other long-term assets:
Money Market Mutual Funds	124
Quoted prices in active market (Level 1) | Mutual Fund Large U.S. Equity
Other long-term assets:
Equity securities, available-for-sale:	1,881
Quoted prices in active market (Level 1) | Mutual Fund Small/Mid U.S. Equity
Other long-term assets:
Equity securities, available-for-sale:	2,132
Quoted prices in active market (Level 1) | Mutual Fund International
Other long-term assets:
Equity securities, available-for-sale:	798
Quoted prices in active market (Level 1) | Mutual Fund Balanced
Other long-term assets:
Equity securities, available-for-sale:	709
Quoted prices in active market (Level 1) | Mutual Fund Fixed Income
Other long-term assets:
Equity securities, available-for-sale:	746
Quoted prices in active market (Level 1) | RealD Inc. | Common Stock
Other long-term assets:
Equity securities, available-for-sale:	$ 11,751