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Noncontrolling Interest (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Noncontrolling Interest [Line Items]
Capital contributions to joint venture	$ 0		$ 0
Net income attributable to noncontrolling interest	106,000	$ 2,000	(1,476,000)	$ 2,000
Huen Electric Inc [Member]
Noncontrolling Interest [Line Items]
Distributions to partners	$ 0		$ 0

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