FAIR VALUE MEASUREMENTS (Tables)

6 Months Ended

Mar. 31, 2015

Fair Value Disclosures [Abstract]

Financial Assets and Liabilities Measured at Fair Value on a Recurring Basis

Financial assets and liabilities measured at fair value on a recurring basis are classified on the valuation technique level in the table below:

March 31, 2015	Total			Level 1		Level 2			Level 3
Cash and cash equivalents	$	146,116		$	146,116	$	—		$	—
Short-term investments	—			—		—			—
Derivatives	(123		)	—		(123		)	—
Other long-term assets	550			—		550			—
Total assets and liabilities at fair value	$	146,543		$	146,116	$	427		$	—

September 30, 2014	Total			Level 1		Level 2			Level 3
Cash and cash equivalents	$	128,537		$	128,537	$	—		$	—
Short-term investments	13,121			13,121		—			—
Derivatives	(92		)	—		(92		)	—
Other long-term assets	550			—		550			—
Total assets and liabilities at fair value	$	142,116		$	141,658	$	458		$	—