Summary of Significant Accounting Policies (Tables)

3 Months Ended

Mar. 31, 2018

Accounting Policies [Abstract]

Advertising Costs

Advertising costs for the three months ended March 31, 2018 and 2017, are reflected in the following table (in thousands):

	Three Months Ended   March 31,
	2018		2017
Advertising costs	$	13,081	$	11,471