Note 11 - Marketable Securities

9 Months Ended

Sep. 30, 2021

Notes to Financial Statements

Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block]

Note 11.  Marketable Securities

	September 30, 2021						December 31, 2020
			Unrealized		Fair				Unrealized		Fair
	Cost		Gains (Losses)		Value		Cost		Gains (Losses)		Value
Certificates of deposit	$	18	$	—	$	18	$	21	$	—	$	21
Corporate securities		—		—		—		—		—		—
Total current marketable securities	$	18	$	—	$	18	$	21	$	—	$	21
Noncurrent marketable securities - Corporate securities	$	—	$	—	$	—	$	16	$	33	$	49

Certificates of deposit maturing in one year or less total $18 at  September 30, 2021.

We held $16 of convertible notes receivable from our investment in Hyliion Inc. On  October 1, 2020, Hyliion completed its merger with Tortoise Acquisition Corp. The business combination resulted in the combined company being renamed Hyliion Holdings Corp., with its common stock being listed on the New York Stock Exchange under the ticker symbol HYLN. Effective with the completed merger, our notes receivable were converted into 2,988,229 common shares of HYLN. Our investment in Hyliion was carried at fair value with changes in fair value included in other income (expense), net. Our investment in Hyliion was included in noncurrent marketable securities at December 31, 2020. The strategic partnership with Hyliion established Dana as the preferred supplier for e-propulsion systems to Hyliion as long as Dana maintained a minimum equity investment in Hyliion; in the second quarter of 2021, the partnership arrangement was modified whereby a minimum equity investment was no longer required, thereby we reclassified our investment to current assets on the balance sheet. During the third quarter of 2021, we sold all of our Hyliion shares.