Goodwill and Intangible Assets (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Goodwill, Impaired [Abstract]
Goodwill	$ 16,709		$ 16,709		$ 16,709
Accumulated Impairment	(11,347)		(11,347)		(10,410)
Net	5,362		5,362		6,299
Amortized Intangible Assets [Abstract]
Gross carrying amount	12,442		12,442		12,442
Accumulated amortization	(10,691)		(10,691)		(10,291)
Impairment		$ 500	(464)		(464)
Impairment, Intangible Asset, Finite-Lived, Statement of Income or Comprehensive Income [Extensible Enumeration]				Intangible assets, net
Total	1,287		1,287		1,687
Amortization of intangible assets	108	209	400	$ 700
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
2023 remainder	108		108
2024	332		332
2025	255		255
2026	204		204
2027	169		169
Thereafter	219		219
Total	1,287		1,287		1,687
Engineering [Member]
Goodwill, Impaired [Abstract]
Goodwill	8,278		8,278		8,278
Accumulated Impairment	(3,370)		(3,370)		(3,370)
Net	4,908		4,908		4,908
Workforce Solutions [Member]
Goodwill, Impaired [Abstract]
Goodwill	8,431		8,431		8,431
Accumulated Impairment	(7,977)		(7,977)		(7,040)
Net	454		454		1,391
Workforce Solutions [Member] | Training Services and Technical Staffing [Member]
Goodwill, Impaired [Abstract]
Accumulated Impairment		$ 7,000		$ 7,000
Workforce Solutions [Member] | Training Services [Member]
Goodwill, Impaired [Abstract]
Accumulated Impairment	900		900
Workforce Solutions [Member] | Technical Staffing [Member]
Goodwill, Impaired [Abstract]
Accumulated Impairment	900		900
Customer Relationships [Member]
Amortized Intangible Assets [Abstract]
Gross carrying amount	8,628		8,628		8,628
Accumulated amortization	(7,318)		(7,318)		(7,050)
Impairment			(464)		(464)
Total	846		846		1,114
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
Total	846		846		1,114
Trade Names [Member]
Amortized Intangible Assets [Abstract]
Gross carrying amount	1,689		1,689		1,689
Accumulated amortization	(1,261)		(1,261)		(1,196)
Impairment			0		0
Total	428		428		493
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
Total	428		428		493
Developed Technology [Member]
Amortized Intangible Assets [Abstract]
Gross carrying amount	471		471		471
Accumulated amortization	(471)		(471)		(471)
Impairment			0		0
Total	0		0		0
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
Total	0		0		0
Non-Contractual Customer Relationships [Member]
Amortized Intangible Assets [Abstract]
Gross carrying amount	433		433		433
Accumulated amortization	(433)		(433)		(433)
Impairment			0		0
Total	0		0		0
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
Total	0		0		0
Noncompete Agreement [Member]
Amortized Intangible Assets [Abstract]
Gross carrying amount	527		527		527
Accumulated amortization	(514)		(514)		(486)
Impairment			0		0
Total	13		13		41
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
Total	13		13		41
Alliance Agreement [Member]
Amortized Intangible Assets [Abstract]
Gross carrying amount	527		527		527
Accumulated amortization	(527)		(527)		(488)
Impairment			0		0
Total	0		0		39
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
Total	0		0		39
Others [Member]
Amortized Intangible Assets [Abstract]
Gross carrying amount	167		167		167
Accumulated amortization	(167)		(167)		(167)
Impairment			0		0
Total	0		0		0
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
Total	$ 0		$ 0		$ 0