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Supplemental Cash Flow Information (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Supplemental Cash Flow Elements [Abstract]
Accounts receivable, including retainage	$ (15,486)	$ (26,316)
Contracts in progress, net	(26,934)	(1,573)
Receivables from and equity in construction joint ventures	(3,931)	(141)
Other assets	(2,111)	127
Accounts payable	11,198	8,814
Accrued compensation and other liabilities	7,330	2,936
Members' interest subject to mandatory redemption and undistributed earnings	1,929	1,458
Changes in operating assets and liabilities	$ (28,005)	$ (14,695)

X

- Definition

Represents the increase (decrease) in member's interest subject to mandatory redemption and undistributed earnings.

+ References

No definition available.

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- Definition

The net change during the reporting period in Equity in and Receivable from unconsolidated joint ventures.

+ References

No definition available.

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- Definition

The increase (decrease) during the reporting period in the aggregate amount of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (a)
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- Definition

The increase (decrease) during the reporting period in the aggregate amount of expenses incurred but not yet paid.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
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- Definition

Amount of increase (decrease) in right to consideration in exchange for good or service transferred to customer when right is conditioned on something other than passage of time.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
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-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (a)
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- Definition

The increase (decrease) during the reporting period of all assets and liabilities used in operating activities.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
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Amount of increase (decrease) in operating assets classified as other.

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- Definition

The increase (decrease) during the reporting period of the amount of revenue for work performed for which billing has not occurred, net of uncollectible accounts.

+ References

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