Revenue (Details) $ in Thousands	3 Months Ended
Mar. 31, 2021 USD ($) Stream Obligation	Mar. 31, 2020 USD ($)
Disaggregation of Revenue [Abstract]
Revenue	$ 13,104	$ 17,705
Number of distinct revenue streams \| Stream	3
Contract with Customer, Asset and Liability [Abstract]
Revenue recognized in the period from amounts included in Billings-in-Excess of Revenue Earned at the beginning of the period	$ 2,189	3,762
Revenue, Performance Obligation [Abstract]
Number of performance obligations \| Obligation	2
Performance Segment [Member]
Disaggregation of Revenue [Abstract]
Revenue	$ 7,081	9,711
Performance Segment [Member] \| System Design and Build [Member]
Disaggregation of Revenue [Abstract]
Revenue	1,862	3,813
Performance Segment [Member] \| System Design and Build [Member] \| Point in Time [Member]
Disaggregation of Revenue [Abstract]
Revenue	0	0
Performance Segment [Member] \| System Design and Build [Member] \| Over Time [Member]
Disaggregation of Revenue [Abstract]
Revenue	1,862	3,813
Performance Segment [Member] \| Software and Support [Member]
Disaggregation of Revenue [Abstract]
Revenue	813	910
Performance Segment [Member] \| Software and Support [Member] \| Point in Time [Member]
Disaggregation of Revenue [Abstract]
Revenue	95	640
Performance Segment [Member] \| Software and Support [Member] \| Over Time [Member]
Disaggregation of Revenue [Abstract]
Revenue	718	270
Performance Segment [Member] \| Training and Consulting [Member]
Disaggregation of Revenue [Abstract]
Revenue	4,406	4,988
Performance Segment [Member] \| Training and Consulting [Member] \| Point in Time [Member]
Disaggregation of Revenue [Abstract]
Revenue	68	29
Performance Segment [Member] \| Training and Consulting [Member] \| Over Time [Member]
Disaggregation of Revenue [Abstract]
Revenue	4,338	4,959
NITC Segment [Member]
Disaggregation of Revenue [Abstract]
Revenue	6,023	7,994
NITC Segment [Member] \| Training and Consulting [Member]
Disaggregation of Revenue [Abstract]
Revenue	6,023	7,994
NITC Segment [Member] \| Training and Consulting [Member] \| Point in Time [Member]
Disaggregation of Revenue [Abstract]
Revenue	86	0
NITC Segment [Member] \| Training and Consulting [Member] \| Over Time [Member]
Disaggregation of Revenue [Abstract]
Revenue	$ 5,937	$ 7,994

Refers to the number of distinct revenue streams the company derives its revenue through.

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- Definition

Refers to the number of main performance obligations for SDB contracts.

+ References

No definition available.

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- References

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- Definition

Amount of revenue recognized that was previously included in balance of obligation to transfer good or service to customer for which consideration from customer has been received or is due.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
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- References

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- Definition

Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

+ References

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-Publisher FASB
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- References

No definition available.

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