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Business Combination - Fair Value of Asset and Liabilities Assumed (Detail) ¥ in Thousands, $ in Thousands | Aug. 31, 2017 CNY (¥) | Aug. 31, 2017 USD ($) | Jun. 08, 2016 CNY (¥) | May 28, 2016 CNY (¥) | Dec. 31, 2015 CNY (¥) | Apr. 01, 2015 CNY (¥)
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Business Acquisition [Line Items] |  |  |  |  |  |
Cash and cash equivalents |  |  |  |  | ¥ 86,882 |
Accounts receivable, net |  |  |  |  | 38,351 |
Prepayments and other current assets |  |  |  |  | 1,891 |
Property and equipment, net |  |  |  |  | 3,477 |
Goodwill |  |  |  |  | 348,910 |
Other non-current assets |  |  |  |  | 5,530 |
Accounts payable |  |  |  |  | (42,033) |
Accrued expenses and other current liabilities |  |  |  |  | (14,994) |
Other non-current liabilities |  |  |  |  | (10,028) |
Deferred tax liabilities |  |  |  |  | (31,012) |
Total fair value of purchase price consideration |  |  |  |  | 440,306 |
Fair value of noncontrolling interests |  |  |  |  | 62,224 |
Trademarks [Member] |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Intangible assets |  |  |  |  | 19,515 |
Technology-Based Intangible Assets [Member] |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Intangible assets |  |  |  |  | 13,772 |
User base |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Intangible assets |  |  |  |  | 8,424 |
Customer relationship |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Intangible assets |  |  |  |  | 6,266 |
Platform |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Intangible assets |  |  |  |  | 67,579 |
Baomi Technology [Member] |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Cash and cash equivalents | ¥ 30,849 | $ 4,741 |  |  |  |
Other current assets | 12,807 | 1,968 |  |  |  |
Intangible assets | 7,728 | 1,188 |  |  |  |
Deferred tax assets | 1,155 | 178 |  |  |  |
Property and equipment, net | 80 | 12 |  |  |  |
Goodwill | 12,928 | 1,987 |  |  |  |
Other current liabilities | (9,427) | (1,448) |  |  |  |
Deferred tax liabilities | (1,155) | (178) |  |  |  |
Total fair value of purchase price consideration | 54,965 | 8,448 |  |  |  |
Fair value of noncontrolling interests | ¥ 13,167 | $ 2,024 |  |  |  |
News Republic |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Cash and cash equivalents |  |  | ¥ 21,857 |  |  |
Restricted cash |  |  | 402 |  |  |
Accounts receivable, net |  |  | 5,171 |  |  |
Prepayments and other current assets |  |  | 2,877 |  |  |
Deferred tax assets |  |  | 33,300 |  |  |
Property and equipment, net |  |  | 334 |  |  |
Goodwill |  |  | 277,492 |  |  |
Short-term loans |  |  | (5,555) |  |  |
Accounts payable |  |  | (13,493) |  |  |
Accrued expenses and other current liabilities |  |  | (5,701) |  |  |
Long-term loans |  |  | (3,960) |  |  |
Deferred tax liabilities |  |  | (25,875) |  |  |
Total fair value of purchase price consideration |  |  | 364,481 |  |  |
News Republic | Supplier Relationship |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Intangible assets |  |  | 42,763 |  |  |
News Republic | Trademarks [Member] |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Intangible assets |  |  | 23,027 |  |  |
News Republic | Noncompete Agreements |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Intangible assets |  |  | 6,579 |  |  |
News Republic | Technology-Based Intangible Assets [Member] |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Intangible assets |  |  | ¥ 5,263 |  |  |
MobPartner |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Cash and cash equivalents |  |  |  |  |  | ¥ 60,150
Accounts receivable, net |  |  |  |  |  | 37,308
Prepayments and other current assets |  |  |  |  |  | 1,091
Property and equipment, net |  |  |  |  |  | 1,207
Goodwill |  |  |  |  |  | 215,208
Other non-current assets |  |  |  |  |  | 465
Accounts payable |  |  |  |  |  | (41,774)
Accrued expenses and other current liabilities |  |  |  |  |  | (7,633)
Other non-current liabilities |  |  |  |  |  | (10,028)
Deferred tax liabilities |  |  |  |  |  | (29,117)
Total fair value of purchase price consideration |  |  |  |  |  | 314,237
MobPartner | Trademarks [Member] |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Intangible assets |  |  |  |  |  | 13,515
MobPartner | Customer relationship |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Intangible assets |  |  |  |  |  | 6,266
MobPartner | Platform |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Intangible assets |  |  |  |  |  | ¥ 67,579
Moxiu Technology |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Cash and cash equivalents |  |  |  | ¥ 26,732 |  |
Accounts receivable, net |  |  |  | 1,043 |  |
Prepayments and other current assets |  |  |  | 767 |  |
Property and equipment, net |  |  |  | 2,270 |  |
Goodwill |  |  |  | 111,720 |  |
Other non-current assets |  |  |  | 5,065 |  |
Accounts payable |  |  |  | (259) |  |
Accrued expenses and other current liabilities |  |  |  | (7,361) |  |
Deferred tax liabilities |  |  |  | (1,895) |  |
Total fair value of purchase price consideration |  |  |  | 88,488 |  |
Fair value of noncontrolling interests |  |  |  | 62,224 |  |
Moxiu Technology | Trademarks [Member] |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Intangible assets |  |  |  | 6,000 |  |
Moxiu Technology | Technology-Based Intangible Assets [Member] |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Intangible assets |  |  |  | 6,200 |  |
Moxiu Technology | User base |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Intangible assets |  |  |  | ¥ 430 |  |
Other acquisitions |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Prepayments and other current assets |  |  |  |  | 33 |
Goodwill |  |  |  |  | 21,982 |
Total fair value of purchase price consideration |  |  |  |  | 37,581 |
Other acquisitions | Technology-Based Intangible Assets [Member] |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Intangible assets |  |  |  |  | 7,572 |
Other acquisitions | User base |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Intangible assets |  |  |  |  | ¥ 7,994 |

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- Definition Amount due from customers or clients for goods or services, including trade receivables, that have been delivered or sold in the normal course of business, and amounts due from others, including related parties expected to be converted to cash, sold or exchanged within one year or the normal operating cycle, if longer, acquired at the acquisition date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=84161108&loc=d3e4845-128472 + Details
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- Definition The amount of identifiable intangible assets recognized as of the acquisition date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 55 -Paragraph 37 -URI http://asc.fasb.org/extlink&oid=84160947&loc=d3e2207-128464 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=84161108&loc=d3e4845-128472 + Details
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