Revenues

12 Months Ended

Dec. 31, 2018

Revenue from Contract with Customer [Abstract]

Revenue from Contract with Customer [Text Block]

19. Revenues

The following table represents a disaggregation of revenue from contracts with customers. Revenue from continuing operations originating from the following geographic areas for the years ended December 31, 2018 and 2017 consist of:


		Year Ended December 31, 2018
		(in thousands)
		United States		United Kingdom		Germany		Rest of the world		Total
Instruments, equipment, software and accessories	$	79,614	$	13,690	$	13,193	$	8,571	$	115,068
Service, maintenance and warranty contracts		4,438		832		366		70		5,706
Total revenues	$	84,052	$	14,522	$	13,559	$	8,641	$	120,774


		Year Ended December 31, 2017
		(in thousands)
		United States		United Kingdom		Germany		Rest of the world		Total
Instruments, equipment, software and accessories	$	40,240	$	14,224	$	10,766	$	9,392	$	74,622
Service, maintenance and warranty contracts		1,481		819		396		89		2,785
Total revenues	$	41,721	$	15,043	$	11,162	$	9,481	$	77,407

Deferred revenue

As of December 31, 2018, the Company had approximately $3.8 million in deferred revenue comprised of revenue deferred from service contracts and revenue deferred from advance payments. Changes in deferred revenue from service contracts and advance payments from customers during the period were as follows:

		Year Ended December 31, 2018
		(in thousands)
		Service Contracts		Customer Advances		Total
Balance, beginning of period	$	505	$	-	$	505
Addition due to business combination		848		2,128		2,976
Deferral of revenue		4,305		1,210		5,515
Recognition of deferred revenue		(3,984)		(1,177)		(5,161)
Effect of foreign currency translation		(15)		-		(15)
Balance, end of period	$	1,659	$	2,161	$	3,820

Acquisition of DSI

As discussed in Note 5, the Company acquired DSI, a previously privately held company on January 31, 2018. The Company has adopted ASC 606 with respect to DSI as of January 31, 2018. The tables, revenue recognition policies applied, and product descriptions noted above are thus inclusive of, and reflect revenues of DSI for the periods from the acquisition date.