Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Statement Of Financial Position [Abstract]
Property and equipment, net of accumulated depreciation and amortization	$ 87,548	$ 81,904
Intangible assets, net of accumulated amortization	$ 1,100	$ 932
Common stock, outstanding shares (in shares)	4,290,697	3,100,496
Treasury stock, at cost shares (in shares)	208,003	111,245

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation.

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Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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Number of previously issued common shares repurchased by the issuing entity and held in treasury.

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