Related Party Transactions - Additional Information (Detail) - USD ($)	3 Months Ended
Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018
Related Party Transactions [Abstract]
Revenue recognized from related party	$ 26,000	$ 75,000
Accounts receivable	26,000		$ 0
Charges for services	110,000	$ 127,000
Accounts payable and accrued expenses	$ 84,000		$ 54,000

Amount for accounts payable to related parties.

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- Definition

For an unclassified balance sheet, amount of receivables arising from transactions with related parties.

+ References

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- Definition

The aggregate costs related to goods produced and sold and services rendered by an entity during the reporting period. This excludes costs incurred during the reporting period related to financial services rendered and other revenue generating activities.

+ References

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- References

No definition available.

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- Definition

Amount of revenue, fees and commissions earned from transactions between (a) a parent company and its subsidiaries; (b) subsidiaries of a common parent; (c) an entity and trusts for the benefit of employees, for example, but not limited to, pension and profit-sharing trusts that are managed by or under the trusteeship of the entity's management; (d) an entity and its principal, owners, management, or members of their immediate families; and (e) affiliates.

+ References

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