Multiemployer Pension Plans - (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Multiemployer Plans [Line Items]
Contributions	$ 14,318	$ 16,109
Heating, Piping and Refrigeration Pension Fund
Multiemployer Plans [Line Items]
Contributions	851	1,045
Plumbers Local No 98 Defined Benefit Pension Fund
Multiemployer Plans [Line Items]
Contributions	1,386	1,658
United Association National Pension Fund
Multiemployer Plans [Line Items]
Contributions	700	947
Pipefitters Local 636 Defined Benefit Pension Fund
Multiemployer Plans [Line Items]
Contributions	1,437	1,206
Sheet Metal Workers' Pension Plan of Southern California, Arizona and Nevada
Multiemployer Plans [Line Items]
Contributions	297	1,322
Sheet Metal Workers' National Pension Fund
Multiemployer Plans [Line Items]
Contributions	701	1,144
Sheet Metal Workers Local Union No. 80 Pension Fund
Multiemployer Plans [Line Items]
Contributions	1,571	1,383
Sheet Metal Workers Local 98 Pension Fund
Multiemployer Plans [Line Items]
Contributions	1,003	945
Steamfitters Local Union No. 420 Pension Fund
Multiemployer Plans [Line Items]
Contributions	526	591
Pipefitters Union Local No. 537 Pension Fund
Multiemployer Plans [Line Items]
Contributions	1,805	1,337
Plumbers & Pipefitters Local No 189 Pension Plan
Multiemployer Plans [Line Items]
Contributions	489	598
Plumbers & Pipefitters of Local Union No. 333 Pension Fund
Multiemployer Plans [Line Items]
Contributions	1,694	1,329
Southern California Pipe Trades Retirement Fund
Multiemployer Plans [Line Items]
Contributions	161	662
Electrical Workers Local No. 26 Pension Trust Fund
Multiemployer Plans [Line Items]
Contributions	429	348
Plumbers Union Local No. 12 Pension
Multiemployer Plans [Line Items]
Contributions	131	261
Sheet Metal Workers Local 7, Zone 1 Pension Plan
Multiemployer Plans [Line Items]
Contributions	293	383
Plumbers & Steamfitters Local 577 Pension Plan
Multiemployer Plans [Line Items]
Contributions	277	208
Laborers District Council Pension and Disability Trust Fund No. 2
Multiemployer Plans [Line Items]
Contributions	53	147
Laborers District Council Pension and Disability Trust Fund No. 2
Multiemployer Plans [Line Items]
Contributions	33	37
National Electrical Benefit Fund
Multiemployer Plans [Line Items]
Contributions	1	111
Airconditioning and Refrigeration Industry Retirement Trust Fund
Multiemployer Plans [Line Items]
Contributions	130	144
Plumbers and Steamfitters Local 486 Pension Fund
Multiemployer Plans [Line Items]
Contributions	15	40
Steamfitters Local #449 Pension Plan
Multiemployer Plans [Line Items]
Contributions	68	109
United Association Local Union No. 322 Pension Plan
Multiemployer Plans [Line Items]
Contributions	24	18
Sheet Metal Workers Local 224 Pension Fund
Multiemployer Plans [Line Items]
Contributions	21	20
Plumbers Local 27 Pension Fund
Multiemployer Plans [Line Items]
Contributions	0	18
Plumbers and Pipefitters Local Union No. 43 Pension Fund
Multiemployer Plans [Line Items]
Contributions	95	0
All other plans
Multiemployer Plans [Line Items]
Contributions	$ 127	$ 98