Revenue Recognition (Tables)

6 Months Ended

Jun. 30, 2019

Revenue from Contract with Customer [Abstract]

Revenue from External Customers by Geographic Areas

The following table summarizes disaggregated revenue information by geographic area based upon the customer's country of domicile (in thousands):

	Three-months Ended				Six-months Ended
	June 30, 2019		July 1, 2018		June 30, 2019		July 1, 2018
Americas	$	78,500	$	71,812	$	143,656	$	131,029
Europe	58,881		70,366		118,538		126,569
Greater China	35,782		41,175		58,592		68,334
Other Asia	25,884		27,911		51,745		54,899
	$	199,047	$	211,264	$	372,531	$	380,831

Revenue from External Customers by Products and Services

The following table summarizes disaggregated revenue information by revenue type (in thousands):

	Three-months Ended				Six-months Ended
	June 30, 2019		July 1, 2018		June 30, 2019		July 1, 2018
Standard products and services	$	173,368	$	183,627	$	334,420	$	342,026
Application-specific customer solutions	25,679		27,637		38,111		38,805
	$	199,047	$	211,264	$	372,531	$	380,831

Deferred Revenue, by Arrangement, Disclosure

The following table summarizes the deferred revenue and customer deposits activity for the six-month period ended June 30, 2019 (in thousands):

Balance as of December 31, 2018	$	9,845
Increases to deferred revenue and customer deposits	29,883
Recognition of revenue	(21,308		)
Foreign exchange rate changes	(88		)
Balance as of June 30, 2019	$	18,332