UNAUDITED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Current assets:
Cash and cash equivalents	$ 2,846,300	$ 2,081,075
Short-term investments	4,407,028	2,218,880
Accounts receivable, net of allowance for doubtful accounts of $35,466 and $25,565, respectively	1,437,762	860,115
Prepaid expenses and other current assets	433,505	241,449
Total current assets	9,124,595	5,401,519
Property and equipment, net	457,548	347,017
Intangible assets, net	2,218,152	1,993,885
Goodwill	2,727,897	2,396,906
Long-term investments	11,114,314	9,591,067
Other assets	146,605	108,579
Total assets	25,789,111	19,838,973
Current liabilities:
Accounts payable	805,740	419,108
Accrued expenses and other current liabilities	1,091,372	857,467
Deferred merchant bookings	827,361	614,361
Convertible debt	899,802	967,734
Total current liabilities	3,624,275	2,858,670
Deferred income taxes	407,935	822,334
Other long-term liabilities	143,827	138,767
Long-term debt	8,726,679	6,170,522
Total liabilities	12,902,716	9,990,293
Convertible debt	9,401	28,538
Stockholders' equity:
Common stock, $0.008 par value; authorized 1,000,000,000 shares, 62,575,278 and 62,379,247 shares issued, respectively	486	485
Treasury stock, 13,822,935 and 13,190,929 shares, respectively	(7,997,881)	(6,855,164)
Additional paid-in capital	5,707,331	5,482,653
Retained earnings	14,513,392	11,326,852
Accumulated other comprehensive income (loss)	653,666	(134,684)
Total stockholders' equity	12,876,994	9,820,142
Total liabilities and stockholders' equity	$ 25,789,111	$ 19,838,973