Revenue (Tables)

12 Months Ended

Dec. 31, 2019

Revenue from Contract with Customer [Abstract]

Schedule of Disaggregated Revenue

The following table presents our revenues disaggregated by major source (in thousands):

	Year Ended December 31, 2019
	Diagnostic Services		Diagnostic Imaging		Mobile Healthcare		Building and Construction		Real Estate and Investments		Total
Major Goods/Service Lines
Mobile Imaging	$	46,531	$	—	$	31,251	$	—	$	—	$	77,782
Camera Sales	—		7,213		—		—		—		7,213
Camera Support	—		6,659		—		—		—		6,659
Healthcare Revenue from Contracts with Customers	46,531		13,872		31,251		—		—		91,654
Lease Income	1,192		—		10,000		40		—		11,232
Building and Construction	—		—		—		11,217		—		11,217
Real Estate and Investments	—		—		—		—		82		82
Total Revenues	$	47,723	$	13,872	$	41,251	$	11,257	$	82	$	114,185
Timing of Revenue Recognition
Services and goods transferred over time	$	47,723	$	6,090	$	40,731	$	40	$	—	$	94,584
Services and goods transferred at a point in time	—		7,782		520		11,217		82		19,601
Total Revenues	$	47,723	$	13,872	$	41,251	$	11,257	$	82	$	114,185

	Year Ended December 31, 2018
	Diagnostic Services		Diagnostic Imaging		Mobile Healthcare		Building and Construction		Real Estate and Investments		Total
Major Goods/Service Lines
Mobile Imaging	$	48,694	$	—	$	32,865	$	—	$	—	$	81,559
Camera Sales	—		4,914		—		—		—		4,914
Camera Support	—		6,951		—		—		—		6,951
Healthcare Revenue from Contracts with Customers	48,694		11,865		32,865		—		—		93,424
Lease Income	562		118		10,076		—		—		10,756
Building and Construction	—		—		—		—		—		—
Real Estate and Investments	—		—		—		—		—		—
Total Revenues	$	49,256	$	11,983	$	42,941	$	—	$	—	$	104,180
Timing of Revenue Recognition
Services and goods transferred over time	$	45,862	$	6,555	$	42,477	$	—	$	—	$	94,894
Services and goods transferred at a point in time	3,394		5,428		464		—		—		9,286
Total Revenues	$	49,256	$	11,983	$	42,941	$	—	$	—	$	104,180

Schedule of changes in deferred revenues

Changes in the deferred revenues for the year ended December 31, 2019, is as follows (in thousands):

Balance at December 31, 2017	$	2,375
Revenue recognized that was included in balance at beginning of the year	(1,380		)
Deferred revenue, net, related to contracts entered into during the year	718
Balance at December 31, 2018	1,713
ATRM beginning balance	317
Revenue recognized that was included in balance at beginning of the year	(1,477		)
Deferred revenue, net, related to contracts entered into during the year	1,248
Balance at December 31, 2019	$	1,801