Goodwill and Intangible Assets (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020 USD ($)	Sep. 30, 2019 USD ($)	Sep. 30, 2020 USD ($) Segment	Sep. 30, 2019 USD ($)	Dec. 31, 2019 USD ($)
Goodwill and Intangible Assets [Abstract]
Number of reporting units | Segment			2
Number of operating segments | Segment			2
Loss on impairment	$ 0	$ 0	$ 4,302	$ 5,464
Goodwill [Roll Forward]
Goodwill	13,339		13,339		$ 13,339
Amortized Intangible Assets [Abstract]
Gross carrying amount	16,744		16,744		16,744
Accumulated amortization	(7,793)		(7,793)		(6,265)
Impact of Impairment			(4,302)
Total	4,649		4,649		10,479
Amortization of definite-lived intangible assets	414	$ 596	1,528	$ 1,804
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
2020	415		415
2021	1,213		1,213
2022	911		911
2023	640		640
2024	435		435
and thereafter	1,035		1,035
Total	4,649		4,649		10,479
Customer Relationships [Member]
Amortized Intangible Assets [Abstract]
Gross carrying amount	11,730		11,730		11,730
Accumulated amortization	(5,207)		(5,207)		(4,079)
Impact of Impairment			(3,102)
Total	3,421		3,421		7,651
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
Total	3,421		3,421		7,651
Trade Names [Member]
Amortized Intangible Assets [Abstract]
Gross carrying amount	2,467		2,467		2,467
Accumulated amortization	(952)		(952)		(727)
Impact of Impairment			(778)
Total	737		737		1,740
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
Total	737		737		1,740
Developed Technology [Member]
Amortized Intangible Assets [Abstract]
Gross carrying amount	471		471		471
Accumulated amortization	(471)		(471)		(471)
Impact of Impairment			0
Total	0		0		0
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
Total	0		0		0
Non-Controlling Customer Relationships [Member]
Amortized Intangible Assets [Abstract]
Gross carrying amount	433		433		433
Accumulated amortization	(433)		(433)		(433)
Impact of Impairment			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	949		949		949
Accumulated amortization	(313)		(313)		(217)
Impact of Impairment			(422)
Total	214		214		732
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
Total	214		214		732
Alliance Agreements [Member]
Amortized Intangible Assets [Abstract]
Gross carrying amount	527		527		527
Accumulated amortization	(250)		(250)		(171)
Impact of Impairment			0
Total	277		277		356
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
Total	277		277		356
Others [Member]
Amortized Intangible Assets [Abstract]
Gross carrying amount	167		167		167
Accumulated amortization	(167)		(167)		(167)
Impact of Impairment			0
Total	0		0		0
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
Total	0		0		0
Performance Improvement Solutions [Member]
Goodwill [Roll Forward]
Goodwill	4,908		4,908		4,908
Nuclear Industry Training and Consulting [Member]
Goodwill [Roll Forward]
Goodwill	$ 8,431		$ 8,431		$ 8,431