4. Fair Value

The available-for-sale marketable securities are primarily comprised of investments with a fixed income and equity investments and consist of the following, measured at fair value on a recurring basis:



			Fair Value Measurements as of June 30, 2018 Using Inputs Considered as
	Fair Value		Level 1	Level 2	Level 3
Mutual funds	$	544	199	345	$	—
Total marketable securities	$	544	199	345	$	—



			Fair Value Measurements as of June 30, 2017 Using Inputs Considered as
	Fair Value		Level 1	Level 2	Level 3
Mutual funds	$	704	281	423	$	—
Total marketable securities	$	704	281	423	$	—

During the years ended June 30, 2018 and 2017, there were no purchases of available-for-sale securities and $194 and $40, respectively, of available-for-sale securities that were sold. There were no other-than-temporary impairments during the years ended June 30, 2018 and 2017. During the years ended June 30, 2018 and 2017, there was a realized gain of $34 and $6 that was recorded within interest income and other, net on the consolidated statement of operations.

There were no transfers of assets between Level 1 and Level 2 of the fair value measurement hierarchy during the year ended June 30, 2018. Any transfers between levels are recognized on the date of the event or when a change in circumstances causes a transfer.

Cost Method Investment

The Company holds a cost method investment measured at fair value on a nonrecurring basis and is classified as a Level 3 investment. As of June 30, 2018, the cost of the investment was $2,538. There were no identified events or changes that had a significant adverse effect on the fair value of the investment. The investment is recorded within other long term assets on the consolidated balance sheet.