Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Balance Type:	debit
Period Type:	duration

Goodwill and Intangible Assets - Narrative (Details) - USD ($)		2 Months Ended	12 Months Ended
	Oct. 31, 2017	Dec. 31, 2018	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill impairment	$ 0
Impairment of intangible assets		$ 0
Amortization of intangible assets			$ 3,656,000	$ 2,734,000	$ 3,498,000