Fair Value of Financial Instruments (Tables)

3 Months Ended

Dec. 31, 2016

Fair Value Disclosures [Abstract]

Fair Value Measurement of Company's Short-term Investments and Derivative Instruments

The fair value measurement of the Company’s short-term investments and derivative instruments was determined using the following inputs (in thousands):

	As of December 31, 2016
	Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable (Level 2)		Significant Unobservable (Level 3)		Totals
Short-term investments
Corporate bonds	$	15,608	$	—	$	—	$	15,608
Government bonds		9,131		—		—		9,131
Total	$	24,739	$	—	$	—	$	24,739

	As of September 30, 2016
	Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable (Level 2)		Significant Unobservable (Level 3)		Totals
Short-term investments
Corporate bonds	$	17,323	$	—	$	—	$	17,323
Government bonds		10,168		—		—		10,168
Foreign currency forward contract		—		5		—		5
Total	$	27,491	$	5	$	—	$	27,496