Stockholders' equity

6 Months Ended

Jun. 30, 2019

Stockholders' Equity Note [Abstract]

Stockholders’ equity

Stockholders’ equity

Common Stock

As of June 30, 2019, the Company had reserved 8,554,197 common stock for issuance under its equity incentive plans and 1,820,744 common stock shares for issuance under its employee stock purchase plan.

Accumulated Other Comprehensive Income (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, 2018	$	(6,897	)	$	(229	)	$	(7,126	)
Other comprehensive income (loss), net of taxes of zero and reclassifications	1,147			—			1,147
Balance as of June 30, 2019	$	(5,750	)	$	(229	)	$	(5,979	)

No material amounts were reclassified out of accumulated other comprehensive income during the three and six months ended June 30, 2019 and 2018 for realized gains or losses on available-for-sale securities.  

Accumulated Deficit

Approximately $9.0 million of the Company’s retained earnings within its total accumulated deficit as of December 31, 2018 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 as well as allocate a discretional portion of their after-tax profits to their staff welfare and bonus fund.