Cash and Cash Equivalents

Cash and cash equivalents were as follow (in thousands):

	December 31, 2023		December 31, 2022
Cash	$	14,840	$	9,630
Money market funds	41,231		13,586
Certificates of deposit ⁽¹⁾	—		25,604
Cash and cash equivalents	$	56,071	$	48,820

(1) Represents certificates of deposit with initial maturity days of 90 days or less.

Investments-current

Investments - current were as follows (in thousands):

	December 31, 2023		December 31, 2022
Certificates of deposit ⁽²⁾	$	—	$	5,300
Equity marketable securities	62,978		73,422
U.S. treasury securities	41,313		22,196
Short-term investments	$	104,291	$	100,918

(2) Represents investments with remaining maturity days between 91 days and one year.

Accounts and Other Receivables, Net

Accounts and other receivables net, were as follows (in thousands):

	December 31, 2023		December 31, 2022
Trade accounts receivables	$	1,743	$	1,003
Other receivables	498		232
Accounts and other receivables	$	2,241	$	1,235

Allowance for credit losses as of December 31, 2023 and December 31, 2022 were not material.

Prepaid expenses and Other Current Assets

Prepaid expenses and other current assets were as follows (in thousands):

	December 31, 2023		December 31, 2022
Prepaid expenses	$	1,916	$	1,576
Contract assets - current	7,740		7,671
Other current assets	191		100
Prepaid expenses and other current assets	$	9,847	$	9,347

Investments-noncurrent

Investments- noncurrent are as follows (in thousands):

	December 31, 2023		December 31, 2022
U.S. treasury securities	$	13,653	$	3,602
Corporate bonds	19,697		13,438
Investments-noncurrent	$	33,350	$	17,040

Other Assets

Other assets are as follows (in thousands):

	December 31, 2023		December 31, 2022
Contract assets - noncurrent	110		545
Lease right-of-use assets	36		360
Other assets	—		11
Total other assets	$	146	$	916

Other Current Liabilities

Other current liabilities are as follows (in thousands):

	December 31, 2023		December 31, 2022
Derivative instruments	$	7,930	$	3,649
Lease liabilities -\current	39		486
Income taxes payable	1,730		1,279
Dividends payable	1,489		4,212
Other current liabilities	712		1,418
Total other current liabilities	$	11,900	$	11,044

As of December 31, 2023 and 2022, total other noncurrent liability were $4.9 million and 1.9 million, respectively, primarily consisting of long-term deferred tax credits and liabilities.