Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2017

Schedule of Intangible Assets Deemed to have Definite Lives

The Company’s intangible assets deemed to have definite lives are amortized over their estimated useful lives, on a straight-line basis as follows:



Customer and advertiser relationships	5 to 7 years
Patents and developed technology	2 to 20 years
Media content	5 years
Trademarks and trade names	5 to 13 years
Service contracts and other	10 years

Schedule of Antidilutive Securities Excluded from Computation of EPS

The following table sets forth the number of weighted average stock options, restricted stock, and ESPP shares excluded from the calculation of diluted earnings per share for the years ended December 31, 2017, 2016, and 2015 because to include them in the calculation would be antidilutive.



	2017	2016	2015
Stock options	174,829	624,479	184,142
Restricted stock	301	15,431	1,467
ESPP shares	427	1,055	—