Acquisitions (Distributor Acquisitions) (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2019	Feb. 01, 2019	Dec. 31, 2018
Business Acquisition [Line Items]
Inventory		$ 577
Other assets acquired		542
Goodwill	$ 31,403	$ 9,242	$ 21,530
Distributor acquisitions
Business Acquisition [Line Items]
Consideration transferred	1,400
Inventory	700
Other assets acquired	100
Goodwill	$ 600

Amount of other assets acquired at the acquisition date.

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- Definition

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.

+ References

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- Definition

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.

+ References

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- Definition

The amount of inventory recognized as of the acquisition date.

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Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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