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Income Taxes and Deferred Tax Asset/Liability - Summary Reconciliation Reported Amount of Income Tax Expense (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Effective Income Tax Rate Reconciliation, Amount [Abstract]
Tax expense (recovery) at the U.S. federal statutory rate		$ 3,041	$ 6,568	$ 5,577
State tax based on income, net of refunds and federal benefits		1,670	364	(264)
Taxes on subsidiaries’ and joint ventures’ earnings allocated to noncontrolling interests owners		(2,241)	(4,097)	(5,504)
Valuation allowance	$ (29,375)	(29,375)	(1,013)	(18,006)
Tax credits		(397)	(286)	(349)
Tax rate change		0	(281)	19,545
Return to provision		48	21	(62)
Earn-out liability		0	0	460
Equity compensation		805	26	(1,371)
Other permanent differences		233	436	92
Income tax (benefit) expense		$ (26,216)	$ 1,738	$ 118
Effective Income Tax Rate Reconciliation, Percent [Abstract]
Tax expense (recovery) at the U.S. federal statutory rate		21.00%	21.00%	35.00%
State tax based on income, net of refunds and federal benefits		11.50%	1.20%	(1.70%)
Taxes on subsidiaries’ and joint ventures’ earnings allocated to noncontrolling interests owners		(15.50%)	(13.10%)	(34.50%)
Valuation allowance		(202.90%)	(3.30%)	(113.00%)
Tax credits		(2.70%)	(0.90%)	(2.20%)
Tax rate change		0.00%	(0.90%)	122.70%
Return to provision		0.30%	0.10%	(0.40%)
Earn-out liability		0.00%	0.00%	2.90%
Equity compensation		5.60%	0.10%	(8.60%)
Other permanent differences		1.60%	1.40%	0.60%
Effective income rate, percent		(181.10%)	5.60%	0.80%

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Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to earn-out liability.

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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 13
-URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32698-109319

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