Acquisition of Davis Transfer Company (Details) - Davis Transfer Company $ in Thousands	Oct. 18, 2018 USD ($)
Schedule of Asset Acquisition [Line Items]
Percentage of shares acquired	100.00%
Payments for asset acquisition	$ 52,250
Equity interest issued and issuable	750
Goodwill	4,926
Acquisition related expenses	$ 600

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.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=108376223&loc=d3e13816-109267

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Balance Type:	debit
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