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Goodwill and Intangibles Intangibles by Major Asset Class (Details) - USD ($)	3 Months Ended		12 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2017	Dec. 31, 2018
Acquired Finite-Lived Intangible Assets [Line Items]
Amortization of Intangible Assets	$ 487,000	$ 404,000
Finite-Lived Intangible Assets, Gross	17,420,000			$ 17,420,000
Finite-Lived Intangible Assets, Accumulated Amortization	(2,494,000)			(2,007,000)
Finite-Lived Intangible Assets, Net	$ 14,926,000			15,413,000
Trade Names [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life	25 years		25 years
Finite-Lived Intangible Assets, Gross	$ 250,000			250,000
Finite-Lived Intangible Assets, Accumulated Amortization	(40,000)			(37,000)
Finite-Lived Intangible Assets, Net	$ 210,000			213,000
Trademarks [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life	10 years		10 years
Finite-Lived Intangible Assets, Gross	$ 1,610,000			1,610,000
Finite-Lived Intangible Assets, Accumulated Amortization	(195,000)			(86,000)
Finite-Lived Intangible Assets, Net	$ 1,415,000			1,524,000
Noncompete Agreements [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life	5 years		5 years
Finite-Lived Intangible Assets, Gross	$ 1,810,000			1,810,000
Finite-Lived Intangible Assets, Accumulated Amortization	(436,000)			(360,000)
Finite-Lived Intangible Assets, Net	$ 1,374,000			1,450,000
Developed Technology Rights [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life	7 years		7 years
Finite-Lived Intangible Assets, Gross	$ 4,420,000			4,420,000
Finite-Lived Intangible Assets, Accumulated Amortization	(765,000)			(605,000)
Finite-Lived Intangible Assets, Net	3,655,000			3,815,000
Customer Relationships [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	9,330,000			9,330,000
Finite-Lived Intangible Assets, Accumulated Amortization	(1,058,000)			(919,000)
Finite-Lived Intangible Assets, Net	$ 8,272,000			$ 8,411,000
Minimum [Member] | Customer Relationships [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life	10 years	10 years
Maximum [Member] | Customer Relationships [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life	12 years	12 years

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