Cash, cash equivalents, short-term investments, and restricted cash (Tables)

3 Months Ended

Mar. 31, 2022

Cash and Cash Equivalents [Abstract]

Schedule of Cash and Cash Equivalents

The following table summarizes the Company’s cash, cash equivalents and restricted cash (in thousands):

	March 31, 2022		December 31, 2021
Cash and cash equivalents	$	79,044	$	77,833
Restricted cash	87		87
Total cash, cash equivalents and restricted cash shown in the statement of cash flows	$	79,131	$	77,920

Schedule of Restricted Cash

The following table summarizes the Company’s cash, cash equivalents and restricted cash (in thousands):

	March 31, 2022		December 31, 2021
Cash and cash equivalents	$	79,044	$	77,833
Restricted cash	87		87
Total cash, cash equivalents and restricted cash shown in the statement of cash flows	$	79,131	$	77,920

As of March 31, 2022 and December 31, 2021, the Company's consolidated subsidiaries had $11.4 million and $11.4 million, respectively, of restricted net assets. This compares to the Company's consolidated net assets of $151.5 million and $153.0 million as of March 31, 2022 and December 31, 2021, respectively, which consisted of (in thousands):

	March 31, 2022		December 31, 2021
Cash restricted in China due to unpaid employee benefits and unfulfilled government grants	$	49	$	49
China earnings restricted to fund statutory common reserves in China	10,493		10,463
Loan agreements in Japan requiring local subsidiaries to maintain minimum net asset levels	820		869
Total restricted net assets in the Company's consolidated subsidiaries	$	11,362	$	11,381

Schedule of Unrealized Gains and Losses Related to Cash Equivalents and Investments in Marketable Securities

The following table summarizes the Company’s unrealized gains and losses related to its short-term investments in marketable securities designated as available-for-sale (in thousands): 

	As of March 31, 2022								As of December 31, 2021
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Loss		Fair Value		Amortized Cost		Gross Unrealized Gains		Gross Unrealized Loss		Fair Value
Marketable securities:
Money market funds	$	27,677	$	—	$	—	$	27,677	$	27,675	$	—	$	—	$	27,675
Reported as:
Short-term investments							$	27,677							$	27,675