Stockholders' equity

9 Months Ended

Sep. 30, 2021

Stockholders' Equity Note [Abstract]

Stockholders’ equity

Stockholders’ equity 

Common Stock 

As of September 30, 2021, the Company had reserved 6,694,262 common stock for issuance under its equity incentive plans and 1,156,415 common stock shares for issuance under its employee stock purchase plan.

Accumulated Other Comprehensive Loss

The components of accumulated other comprehensive income (loss), net of related taxes, were as follows (in thousands):

	Foreign Currency Translation Adjustments		Defined Benefit Pension Plan Adjustment		Total Accumulated Other Comprehensive Income (Loss)
Balance as of December 31, 2020	$	1,951	$	(216)	$	1,735
Other comprehensive loss, net of taxes of zero	(555)		—		(555)
Balances at September 30, 2021	$	1,396	$	(216)	$	1,180

No material amounts were reclassified out of accumulated other comprehensive loss during the three and nine months ended September 30, 2021 and 2020 for realized gains or losses on available-for-sale securities.  

Accumulated Deficit

Approximately $10.0 million of the Company’s retained earnings within its total accumulated deficit as of December 31, 2020 was subject to restriction due to the fact that the Company’s subsidiaries in China are required to set aside at least 10% of their respective accumulated profits each year end to fund statutory common reserves.