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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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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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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No definition available.

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Percentage of voting equity interests acquired at the acquisition date in the business combination.

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Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

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Amount of increase in assets, excluding financial assets, lacking physical substance with a definite life, from an acquisition.

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Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination.

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Goodwill And Intangibles (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended			9 Months Ended
	Sep. 30, 2018	Jun. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Business Acquisition [Line Items]
Goodwill arising from acquisition				$ 4,072
Amortization expense	$ 1,982		$ 1,725	$ 5,821	$ 3,958
RC
Business Acquisition [Line Items]
Percentage of business acquired		100.00%
Purchase price		$ 4,453
Goodwill arising from acquisition		4,072
Trademarks and Trade Names \| RC
Business Acquisition [Line Items]
Acquired finite-lived intangible assets		104
Weighted average useful life of acquired intangible assets				1 year
Customer relationships \| RC
Business Acquisition [Line Items]
Acquired finite-lived intangible assets		$ 557
Weighted average useful life of acquired intangible assets				10 years