FAIR VALUE MEASUREMENTS (Details) (USD $)	Mar. 31, 2013
Short-term deposits	$ 110,000
Restricted term deposits	3,554,000
Total assets measured at fair value	32,456,000
Percentage of total assets	11.30%
Fair Value Inputs Level 1 [Member]
Short-term deposits	110,000
Restricted term deposits	3,554,000
Total assets measured at fair value	32,456,000
Percentage of total assets	11.30%
Fair Value Inputs Level 2 [Member]
Short-term deposits
Restricted term deposits
Total assets measured at fair value
Percentage of total assets
Fair Value Inputs Level 3 [Member]
Short-term deposits
Restricted term deposits
Total assets measured at fair value
Percentage of total assets