2. Revenue (Tables)

9 Months Ended

Sep. 27, 2019

Table Text Block Supplement [Abstract]

Schedule of geographical revenues

In the following tables, revenue reported for the periods presented is disaggregated by primary geographical market, major product line, timing of revenue recognition and product application.

Revenue for the three months ended September 27, 2019
Product Application	Planetarium Theaters		Other Visitor Attractions		Architectural Treatments		Total
Primary Geographic Area:
North America	$	2,529	$	351	$	-	$	2,880
Europe		747		24		-		771
Asia		1,095		118		-		1,213
Other		838		-		-		838
	$	5,209	$	493	$	-	$	5,702
Products:
Audio-Visual Systems	$	2,854	$	24	$	-	$	2,878
Domes		1,256		466		-		1,722
Show Content		448		-		-		448
Maintenance and Service		651		3		-		654
	$	5,209	$	493	$	-	$	5,702
Timing of revenue recognition:
Goods transferred at point in time	$	749	$	-	$	-	$	749
Goods and services transferred over time		4,460		493		-		4,953
	$	5,209	$	493	$	-	$	5,702

Revenue for the three months ended September 28, 2018
Product Application	Planetarium Theaters		Other Visitor Attractions		Architectural Treatments		Total
Primary Geographic Area:
North America	$	7,545	$	12	$	-	$	7,557
Europe		2,853		432		118		3,403
Asia		687		182		-		869
Other		371		-		-		371
	$	11,456	$	626	$	118	$	12,200
Products:
Audio-Visual Systems	$	8,718	$	360	$	-	$	9,078
Domes		1,842		266		118		2,226
Show Content		382		-		-		382
Maintenance and Service		514		-		-		514
	$	11,456	$	626	$	118	$	12,200
Timing of revenue recognition:
Goods transferred at point in time	$	472	$	-	$	-	$	472
Goods and services transferred over time		10,984		626		118		11,728
	$	11,456	$	626	$	118	$	12,200

Revenue for the nine months ended September 27, 2019
Product Application	Planetarium Theaters		Other Visitor Attractions		Architectural Treatments		Total
Primary Geographic Area:
North America	$	10,118	$	819	$	125	$	11,062
Europe		3,912		1,242		-		5,154
Asia		2,307		156		-		2,463
Other		2,194		-		-		2,194
	$	18,531	$	2,217	$	125	$	20,873
Products:
Audio-Visual Systems	$	11,978	$	804	$	-	$	12,782
Domes		3,056		1,337		125		4,518
Show Content		1,576		73		-		1,649
Maintenance and Service		1,921		3		-		1,924
	$	18,531	$	2,217	$	125	$	20,873
Timing of revenue recognition:
Goods transferred at point in time	$	2,078	$	73	$	-	$	2,151
Goods and services transferred over time		16,453		2,144		125		18,722
	$	18,531	$	2,217	$	125	$	20,873

Revenue for the nine months ended September 28, 2018
Product Application	Planetarium Theaters		Other Visitor Attractions		Architectural Treatments		Total
Primary Geographic Area:
North America	$	16,449	$	485	$	629	$	17,563
Europe		4,284		844		118		5,246
Asia		3,366		1,775		-		5,141
Other		703		-		-		703
	$	24,802	$	3,104	$	747	$	28,653
Products:
Audio-Visual Systems	$	16,713	$	772	$	-	$	17,485
Domes		4,725		2,332		747		7,804
Show Content		1,552		-		-		1,552
Maintenance and Service		1,812		-		-		1,812
	$	24,802	$	3,104	$	747	$	28,653
Timing of revenue recognition:
Goods transferred at point in time	$	2,031	$	-	$	-	$	2,031
Goods and services transferred over time		22,771		3,104		747		26,622
	$	24,802	$	3,104	$	747	$	28,653

Schedule of contract balances

The following table provides information about receivables, contract assets, and contract liabilities from contracts with customers as of September 27, 2019 and December 31, 2018:

	September 27,    2019	December 31, 2018
Receivables reported as accounts receivable, net	$ 3,319	$ 3,250
Contract revenue in excess of billings	3,563	3,484
Billings in excess of contract revenue	4,198	5,959

Schedule of changes in the contract assets and the contract liabilities

Significant changes in the contract assets and the contract liabilities balances during the period are as follows:

	Contract Assets	Contract Liabilities
Revenue recognized that was included in the contract liability balance at the beginning of the period		$ (4,286)
Increases due to amounts billed to customers, excluding amounts recognized as revenue during the period		$ 2,525
Transferred to receivables from contract assets recognized at the beginning of the period	$ (2,679)
Increases as a result of revenue recognized, excluding amounts transferred to receivables during the period	$ 2,758

Schedule of backlog of performance obligations

The following table includes estimated revenue expected to be recognized and recorded as sales in the future from the backlog of performance obligations that are unsatisfied (or partially unsatisfied) at the end of the reporting period.

	Remainder of 2019	2020	2021	2022	2023
Sales	$ 5,785	$ 8,453	$ 1,711	$ 945	$ 381