Segments and Related Information - Schedule of Financial Information by Reportable Segment - Capital Expenditures (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Capital Expenditures:
Consolidated capital expenditures	$ 170,066	$ 213,746	$ 126,473
Reportable Segments | Communications
Capital Expenditures:
Consolidated capital expenditures	50,600	38,400	36,000
Reportable Segments | Clean Energy and Infrastructure
Capital Expenditures:
Consolidated capital expenditures	44,600	14,000	12,700
Reportable Segments | Oil and Gas
Capital Expenditures:
Consolidated capital expenditures	55,700	149,200	59,700
Reportable Segments | Power Delivery
Capital Expenditures:
Consolidated capital expenditures	13,000	3,800	6,800
Reportable Segments | Other
Capital Expenditures:
Consolidated capital expenditures	0	0	0
Corporate
Capital Expenditures:
Consolidated capital expenditures	$ 6,200	$ 8,300	$ 11,300