Summary of Significant Accounting Policies (Tables)

3 Months Ended

Mar. 31, 2019

Accounting Policies [Abstract]

Advertising Costs

Advertising costs for the three months ended March 31, 2019 and 2018, are reflected in the following table (in thousands):

	Three Months Ended   March 31,
	2019		2018
Advertising costs	$	12,837	$	13,081

Internal-Use Software Development Costs Capitalized

Internal-use software development costs capitalized for the three months ended March 31, 2019 and 2018, are reflected in the following table (in thousands):

	Three Months Ended   March 31,
	2019		2018
Internal-use software development costs	$	5,036	$	455