Ownership, Nature of Business, and Significant Accounting Policies - Goodwill and other intangibles (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2020	Mar. 31, 2019
Goodwill and other intangibles
Amortization period	7 years
Segment impairment	$ 11,288
Amortization of intangibles	110	$ 110
Retail segment impairment
Goodwill and other intangibles
Segment impairment	$ 11,288

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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