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Intangibles (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended	12 Months Ended
	Sep. 30, 2018	Sep. 30, 2018	Dec. 31, 2017
Finite-Lived Intangible Assets [Line Items]
Weighted Average Life		22 years
Gross Carrying Amount	$ 46,617	$ 46,617	$ 46,617
Accumulated Amortization	(3,599)	(3,599)	(1,799)
Amortization of intangible assets	600	$ 1,800	1,800
Customer Relationships
Finite-Lived Intangible Assets [Line Items]
Weighted Average Life		23 years
Gross Carrying Amount	40,823	$ 40,823	40,823
Accumulated Amortization	(2,707)	$ (2,707)	(1,353)
Trade Names
Finite-Lived Intangible Assets [Line Items]
Weighted Average Life		13 years
Gross Carrying Amount	5,307	$ 5,307	5,307
Accumulated Amortization	(788)	$ (788)	(394)
Noncompete Agreements
Finite-Lived Intangible Assets [Line Items]
Weighted Average Life		7 years
Gross Carrying Amount	487	$ 487	487
Accumulated Amortization	$ (104)	$ (104)	$ (52)

X

- Definition

Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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- Definition

The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

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Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

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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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