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.

No definition available.

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- Definition

The amount of excise and sales taxes included in sales and revenues, which are then deducted as a cost of sales. Includes excise taxes, which are applied to specific types of transactions or items (such as gasoline or alcohol); and sales, use and value added taxes, which are applied to a broad class of revenue-producing transactions involving a wide range of goods and services.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03(1))
-URI http://asc.fasb.org/extlink&oid=115205541&loc=SL114868664-224227

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- Definition

Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=109196051&loc=SL49130543-203045

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=109196051&loc=SL49130539-203045

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=109196051&loc=SL49130545-203045

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- Definition

Amount, including tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value-added and excise.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 1
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-Publisher FASB
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-Topic 606
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-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
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Revenues and Deferred Revenue - Schedule of Disaggregated Revenues (Details) ¥ in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2018 CNY (¥)	Dec. 31, 2018 USD ($)	Dec. 31, 2017 CNY (¥)	Dec. 31, 2016 CNY (¥)
Disaggregation Of Revenue [Line Items]
Total revenues	¥ 1,982,505		¥ 974,678	¥ 424,086
Less: sales tax and surcharges	(8,520)		(4,516)	(5,176)
Total net revenues	1,973,985	$ 287,104	970,162	418,910
Subtotal Online Educational Courses
Disaggregation Of Revenue [Line Items]
Total revenues	1,975,544		968,672	418,274
Degree- or Diploma-oriented Post-secondary Courses \| Subtotal Online Educational Courses
Disaggregation Of Revenue [Line Items]
Total revenues	1,814,178		822,832	296,269
Professional Certification Preparation and Professional Skills Courses \| Subtotal Online Educational Courses
Disaggregation Of Revenue [Line Items]
Total revenues	161,366		145,840	122,005
Commissions
Disaggregation Of Revenue [Line Items]
Total revenues	6,374		4,105	4,528
Other Revenue
Disaggregation Of Revenue [Line Items]
Total revenues	587		1,901	1,284
Refundable \| Subtotal Online Educational Courses
Disaggregation Of Revenue [Line Items]
Total revenues	85,630		126,277	79,541
Non-refundable \| Subtotal Online Educational Courses
Disaggregation Of Revenue [Line Items]
Total revenues	¥ 1,889,914		¥ 842,395	¥ 338,733