Marketable Securities

9 Months Ended

Jun. 30, 2019

Our marketable securities historically consist of certificates of deposit, commercial paper, corporate bonds and government municipal bonds. As of June 30, 2019, all of our securities that we held were trading below our amortized cost basis. We determined each decline in value to be temporary in nature.

5. MARKETABLE SECURITIES (CONTINUED)

At June 30, 2019 our marketable securities were (in thousands):



	Amortized Cost (1)		Unrealized Gains		Unrealized Losses			Fair Value (1)
Current marketable securities:
Certificates of deposit	$	2,255	$	—	$	(1	)	$	2,254
Total marketable securities	$	2,255	$	—	$	(1	)	$	2,254


(1)	Included in amortized cost and fair value is purchased and accrued interest of $6.

At September 30, 2018 our marketable securities were (in thousands):



	Amortized Cost (1)		Unrealized Gains		Unrealized Losses			Fair Value (1)
Current marketable securities:
Certificates of deposit	$	4,756	$	—	$	(20	)	$	4,736
Total marketable securities	$	4,756	$	—	$	(20	)	$	4,736


(1)	Included in amortized cost and fair value is purchased and accrued interest of $6.

The following tables show the fair values and gross unrealized losses of our available-for-sale marketable securities that have been in a continuous unrealized loss position deemed to be temporary, aggregated by investment category (in thousands):



	June 30, 2019
	Less than 12 Months				More than 12 Months
	Fair Value		Unrealized Losses		Fair Value		Unrealized Losses
Certificates of deposit	$	—	$	—	$	2,254	$	(1	)
Total	$	—	$	—	$	2,254	$	(1	)



	September 30, 2018
	Less than 12 Months				More than 12 Months
	Fair Value		Unrealized Losses		Fair Value		Unrealized Losses
Certificates of deposit	$	—	$	—	$	4,736	$	(20	)
Total	$	—	$	—	$	4,736	$	(20	)