CONSOLIDATED BALANCE SHEETS - CNY (¥)
¥ in Thousands
Dec. 31, 2017
Dec. 31, 2016
Current assets:    
Cash and cash equivalents (including cash of VIEs of RMB630 and RMB294 as of December 31, 2016 and 2017, respectively) ¥ 686,691 ¥ 810,672
Time deposits 432,536 416,724
Accounts receivable, net of allowance for doubtful accounts 216,700 97,374
Amounts due from a related party 231
Prepaid expenses and other current assets 156,360 126,088
Total current assets 1,492,518 1,450,858
Time deposits 505 58,667
Accounts receivable, net of allowance for doubtful accounts 14,582 1,176
Property and equipment, net (including property and equipment, net of VIEs of RMB3 and nil as of December 31, 2016 and 2017, respectively) 519,691 437,337
Goodwill 3,365 3,365
Long term investments, including investment measured at fair value of RMB15,000 and RMB24,750 as of December 31, 2016 and 2017 (including long term investments of VIEs of RMB35,000 and RMB71,250 as of December 31, 2016 and 2017, respectively) 101,920 41,760
Other non-current assets (including other non-current assets of VIEs of RMB716 and RMB3,564 as of December 31, 2016 and 2017, respectively) 150,064 91,849
Total assets 2,282,645 2,085,012
Current liabilities:    
Accounts payable 11,351 4,502
Amounts due to a related party 79
Income taxes payable (including income taxes payable of VIEs of RMB3,729 and RMB3,052 as of December 31, 2016 and 2017, respectively) 125,971 91,240
Deferred revenue 302,163 266,061
Accrued expenses and other current liabilities (including accrued expenses and other current liabilities of VIEs of RMB176 and RMB308 as of December 31, 2016 and 2017, respectively) 184,646 117,867
Total current liabilities 624,131 479,749
Other non-current liabilities (including other non-current liabilities of VIEs of RMB267 and RMB267 as of December 31, 2016 and 2017, respectively) 4,329 7,043
Total liabilities 628,460 486,792
Commitments and contingencies
Shareholders' equity:    
Treasury shares (1,574,980 and 3,330,646 Class A ordinary shares as of December 31, 2016 and 2017, respectively, at cost) (255,103) (93,761)
Additional paid-in capital 1,094,872 995,216
Accumulated other comprehensive income 54,122 58,204
Retained earnings 759,893 638,173
Total shareholders' equity 1,654,185 1,598,220
Total liabilities and shareholders' equity 2,282,645 2,085,012
Class A [Member]    
Shareholders' equity:    
Ordinary shares 327 302
Class B [Member]    
Shareholders' equity:    
Ordinary shares ¥ 74 ¥ 86