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Summary of Significant Accounting Policies (Details)	12 Months Ended
	Dec. 31, 2018 USD ($) Segment	Dec. 31, 2017 USD ($)
Accounting Policies [Abstract]
Number of operating segments | Segment	1
Available-for-sale securities, other than temporary impairment losses	$ 0	$ 0
Allowance recorded	0	0
Impaired assets	0	0
Assets held-for-sale		$ 0
Revenue recognized	$ (9,588,000)

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For an unclassified balance sheet, a valuation allowance for receivables due a company that are expected to be uncollectible.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
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Amount of assets held-for-sale that are not part of a disposal group.

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Amount of revenue recognized that was previously included in balance of obligation to transfer good or service to customer for which consideration from customer has been received or is due.

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The carrying amount on the books of the entity of the impaired asset to be disposed of by a method other than sale.

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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.

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The amount by which the fair value of an investment in debt and equity securities categorized as Available-for-sale is less than the amortized cost basis or carrying amount of that investment at the balance sheet date and the decline in fair value is deemed to be other than temporary, before considering whether or not such amount is recognized in earnings or other comprehensive income.

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