Employee Benefits - Multiemployer Plans (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
International Union of Operating Engineers - Employers Construction Industry Retirement Plan - Local 302 and 612 Trust Funds
Multiemployer Plans [Line Items]
Certified Zone Status	Green	Green
Contributions	$ 1,289	$ 1,297	$ 2,480
Washington Laborers
Multiemployer Plans [Line Items]
Certified Zone Status	Green	Green
Contributions	$ 106	$ 244	236
Carpenters Retirement Plan of Western Washington
Multiemployer Plans [Line Items]
Certified Zone Status	Green	Green
Contributions	$ 1,717	$ 1,700	1,898
Cement Masons & Plasterers Trust Funds
Multiemployer Plans [Line Items]
Certified Zone Status		Green
Contributions		$ 32	39
Western Conference of Teamsters Pension Trust Fund
Multiemployer Plans [Line Items]
Certified Zone Status	Green	Green
Contributions	$ 44	$ 44	15
Alaska Carpenters Trust Fund
Multiemployer Plans [Line Items]
Contributions			271
Alaska Laborers Trust Fund
Multiemployer Plans [Line Items]
Contributions			$ 226

Indicates certified zone status of multiemployer pension plan determined to be individually significant. Acceptable values are "Green", "Yellow", "Orange", "Red", "Other", and "NA".

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 80
-Section 55
-Paragraph 8
-URI https://asc.fasb.org/extlink&oid=35742348&loc=SL14450788-114948

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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-Name Accounting Standards Codification
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-SubTopic 80
-Section 50
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- Definition

Amount of cost for employer contribution to multiemployer pension plan determined to be individually significant.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 80
-Section 50
-Paragraph 5
-Subparagraph (e)(1)
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Reference 2: http://www.xbrl.org/2003/role/exampleRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
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-Section 55
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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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No definition available.

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