Revenue Recognition (Tables)

9 Months Ended

Sep. 30, 2019

Revenue from Contract with Customer [Abstract]

Contract with Customer, Asset and Liability

The following is a summary of the Company's costs to fulfill and contract liabilities as of September 30, 2019 and December 31, 2018 (in thousands):

	September 30, 2019		December 31, 2018
Costs to fulfill	$	1,272	$	1,152
Contract liabilities	18,526		17,614
Cash received	7,622		11,387
Revenue recognized	$	6,710	$	11,850