FAIR VALUE MEASUREMENTS (Details) (USD $)	Jun. 30, 2012
Short-term deposits	$ 250
Restricted term deposits	3,445
Total assets measured at fair value	38,050
Percentage of total assets	9.70%
Fair Value Inputs Level 1 [Member]
Short-term deposits	250
Restricted term deposits	3,445
Total assets measured at fair value	38,050
Percentage of total assets	9.70%
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