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Fair value of financial instruments
3 Months Ended
Dec. 31, 2016
Fair value of financial instruments [Abstract]  
Fair value of financial instruments
(12)
Fair value of financial instruments

The Company's financial instruments consist mainly of cash and cash equivalents, short-term investments, accounts receivable, accounts payable and debt. The carrying amount of these financial instruments, other than the debt, approximates their fair value as of December 31, 2016 due to their short-term nature. The fair value of the Company’s long-term bank debt at December 31, 2016 approximated $14,778,000 (the gross carrying value as of December 31, 2016 before the offset of debt issuance costs) based on recent financial market pricing. The bank debt represents a Level 2 liability in accordance with the fair value hierarchy described in Note 10.