Summary of Significant Accounting Policies (Additional Information 2) (Details)	12 Months Ended
Dec. 31, 2020 segment customer
Summary Of Significant Accounting Policies [Line Items]
Number of operating segments \| segment	1
Number of reportable segments \| segment	1
Minimum quarterly distribution of available cash	100.00%
Customer One \| Rental Revenue
Summary Of Significant Accounting Policies [Line Items]
Number of customers	1
Percentage of total revenue	11.80%
Customer One \| Accounts Receivable
Summary Of Significant Accounting Policies [Line Items]
Number of customers	1
Percentage of total revenue	39.20%
Percentage of trade accounts receivable	10.00%
Two Customers \| Accounts Receivable
Summary Of Significant Accounting Policies [Line Items]
Number of customers	2
Percentage of trade accounts receivable	45.00%
Two Customers \| Accounts Receivable \| Minimum
Summary Of Significant Accounting Policies [Line Items]
Percentage of trade accounts receivable	5.00%

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Number of customers.

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- Definition

Percentage of total accounts receivable.

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- Definition

Summary Of Significant Accounting Policies [Line Items]

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- Definition

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
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- Definition

Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues.

+ References

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Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements.

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