Revenue recognition (Tables)

9 Months Ended

Sep. 30, 2019

Revenue recognition

Schedule of disaggregated revenue

	Three Months Ended								Nine Months Ended
	September 30, 2019								September 30, 2019
(in thousands)	NA		EMEA		Asia Pacific		Total		NA		EMEA		Asia Pacific		Total
Product revenues
Instruments	$	1,795	$	1,387	$	957	$	4,139	$	4,350	$	3,425	$	2,482	$	10,257
Consumable and other products		3,707		2,557		334		6,598		10,982		6,739		1,081		18,802
Totals		5,502		3,944		1,291		10,737		15,332		10,164		3,563	$	29,059
Service and other revenues
Service-type warranties		806		293		54		1,153		2,309		827		119	$	3,255
Research services		2,412		87		198		2,697		6,687		310		411	$	7,408
Other services		195		159		3		357		597		475		22	$	1,094
Totals	$	3,413	$	539	$	255	$	4,207	$	9,593	$	1,612	$	552	$	11,757

Schedule of changes in deferred revenue from contracts with customers were as follows

Changes in deferred revenue from contracts with customers were as follows (in thousands):

	Nine Months Ended September 30, 2019
Balance at December 31, 2018	$	5,957
606 adoption adjustment		(86)
Deferral of revenue		2,650
Recognition of deferred revenue		(3,255)
Balance at September 30, 2019	$	5,266

Schedule of costs to obtain a contract

The change in the balance of costs to obtain a contract are as follows (in thousands):

	Nine Months Ended September 30, 2019
Balance at December 31, 2018	$	—
606 adoption adjustment		307
Deferral of costs to obtain a contract		636
Recognition of costs to obtain a contract		(635)
Balance at September 30, 2019	$	308