Prepaid expenses and other current assets

12 Months Ended

Dec. 31, 2018

Prepaid expenses and other current assets

Prepaid expenses and other current assets

6.    Prepaid expenses and other current assets

Prepaid expenses and other current assets consist of the following (in thousands): 

	December 31, 2018		December 31, 2017
Prepaid expenses	$	21,547	$	4,740
Prepaid royalty		12,645		—
Non-trade receivable		8,935		—
Prepaid marketing and advertising		5,251		92
Total prepaid expenses and other current assets	$	48,378	$	4,832