Revenue (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021 USD ($)	Jun. 30, 2020 USD ($)	Jun. 30, 2021 USD ($) Stream	Jun. 30, 2020 USD ($)
Disaggregation of Revenue [Abstract]
Revenue	$ 13,522	$ 14,340	$ 26,626	$ 32,045
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	1,115	939	$ 3,304	4,701
Performance Segment [Member]
Disaggregation of Revenue [Abstract]
Revenue	6,862	8,273	13,943	17,984
Performance Segment [Member] | System Design and Build [Member]
Disaggregation of Revenue [Abstract]
Revenue	1,227	3,249	3,089	7,062
Performance Segment [Member] | System Design and Build [Member] | Point in Time [Member]
Disaggregation of Revenue [Abstract]
Revenue	0	0	0	0
Performance Segment [Member] | System Design and Build [Member] | Over Time [Member]
Disaggregation of Revenue [Abstract]
Revenue	1,227	3,249	3,089	7,062
Performance Segment [Member] | Software and Support [Member]
Disaggregation of Revenue [Abstract]
Revenue	766	723	1,579	1,633
Performance Segment [Member] | Software and Support [Member] | Point in Time [Member]
Disaggregation of Revenue [Abstract]
Revenue	127	444	222	1,084
Performance Segment [Member] | Software and Support [Member] | Over Time [Member]
Disaggregation of Revenue [Abstract]
Revenue	639	279	1,357	549
Performance Segment [Member] | Training and Consulting [Member]
Disaggregation of Revenue [Abstract]
Revenue	4,869	4,300	9,275	9,288
Performance Segment [Member] | Training and Consulting [Member] | Point in Time [Member]
Disaggregation of Revenue [Abstract]
Revenue	16	19	84	48
Performance Segment [Member] | Training and Consulting [Member] | Over Time [Member]
Disaggregation of Revenue [Abstract]
Revenue	4,853	4,281	9,191	9,240
NITC Segment [Member]
Disaggregation of Revenue [Abstract]
Revenue	6,660	6,067	12,683	14,061
NITC Segment [Member] | Training and Consulting [Member]
Disaggregation of Revenue [Abstract]
Revenue	6,660	6,068	12,683	14,062
NITC Segment [Member] | Training and Consulting [Member] | Point in Time [Member]
Disaggregation of Revenue [Abstract]
Revenue	163	0	249	0
NITC Segment [Member] | Training and Consulting [Member] | Over Time [Member]
Disaggregation of Revenue [Abstract]
Revenue	$ 6,497	$ 6,068	$ 12,434	$ 14,062