Income Taxes - Schedule of Difference Between Effective and Statutory (Details)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income Tax Disclosure [Abstract]
U.S. federal income tax rate	35.00%	35.00%	35.00%
State taxes	2.00%	1.70%	2.30%
Nondeductible stock-based compensation	2.30%	1.90%	1.40%
U.S. federal, state and foreign research and development credits	(3.30%)	(4.10%)	(3.20%)
Foreign earnings	(3.40%)	(4.60%)	(1.90%)
Domestic production activities deduction	(1.70%)	(1.20%)	(2.20%)
State software development activities benefit	(0.00%)	(0.00%)	(2.40%)
Other	0.30%	0.90%	1.40%
Effective income tax rate	31.20%	29.60%	30.40%