Marketable Securities (Tables)

9 Months Ended

Jun. 30, 2017

Investments, Debt and Equity Securities [Abstract]

Summary of Marketable Securities Including Accrued Interest Receivable

The following is a summary of the amortized cost and the fair value, including accrued interest receivable, as well as unrealized holding gains (losses) on the short-term and long-term marketable securities as of June 30, 2017 and September 30, 2016 (in thousands):

			Gross		Gross
	Amortized		Unrealized		Unrealized
	Cost		Gains		Losses		Fair Value
June 30, 2017 :
Corporate securities	$	2,565	$	—	$	—	$	2,565
Other debt securities		12		—		—		12
	$	2,577	$	—	$	—	$	2,577
September 30, 2016 :
Corporate securities	$	2,394	$	—	$	—	$	2,394
Other debt securities		39		—		—		39
Municipal securities		3,704		1		(3)		3,702
	$	6,137	$	1	$	(3)	$	6,135

Fair Value of Marketable Securities by Contractual Maturity

The fair values of the marketable securities by contractual maturities at June 30, 2017 are presented below (in thousands):

	Fair Value
Due in one year or less	$	12
Due after ten years		2,565
Total marketable securities	$	2,577