We had the following transactions with Alphabet Inc. and its affiliates during the three and nine months ended September 29, 2018 and September 30, 2017 (in thousands):



	Three Months Ended				Nine Months Ended
	September 29, 2018		September 30, 2017		September 29, 2018		September 30, 2017
Revenue	$	819	$	457	$	2,161	$	1,279
Selling and marketing expense	$	2,912	$	3,655	$	8,565	$	10,278

We had the following transactions with Alphabet Inc. and its affiliates as of September 29, 2018 and December 30, 2017 (in thousands):



	Period Ended
	September 29, 2018		December 30, 2017
Accounts receivable	$	407	$	301
Unbilled accounts receivable	$	556	$	222
Accounts payable	$	—	$	128
Accrued expense	$	1,366	$	542
Deferred revenue	$	47	$	1