Amount of net deferred offering cost.

No definition available.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

Amount of restricted net assets of consolidated and unconsolidated subsidiaries as of the end of the most recently completed fiscal year.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(e)(3)(ii))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

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- Definition

Amount of consideration received by subsidiary or equity investee in exchange for shares of stock issued or sold. Includes amount of cash received, fair value of noncash assets received, and fair value of liabilities assumed by the investor.

+ References

No definition available.

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- Definition

The number of shares issued or sold by the subsidiary or equity method investee per stock transaction.

+ References

No definition available.

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- Definition

Per share amount received by subsidiary or equity investee for each share of common stock issued or sold in the stock transaction.

+ References

No definition available.

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RESTRICTED NET ASSETS OR PARENT COMPANY'S CONDENSED FINANCIAL STATEMENTS - Additional Information (Details) - USD ($)			12 Months Ended
	Jan. 04, 2019	Dec. 26, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Condensed Balance Sheet Statements, Captions [Line Items]
Restricted net assets			$ 5,967,000	$ 4,969,000
Direct offering costs			$ 26,399	$ 2,103,816	$ 0
IPO
Condensed Balance Sheet Statements, Captions [Line Items]
Number of shares sold	19,361	1,241,459
Selling price	$ 5	$ 5
Gross proceeds	$ 96,805	$ 6,207,295
Direct offering costs	$ 26,399	$ 2,103,816