5. Goodwill and Intangible Assets

The following table presents the changes in our goodwill balance (in thousands):


Balance at December 31, 2019	$	19,465
Foreign currency impact		(54)
Balance at March 31, 2020	$	19,411

We have two reporting units, Marketplaces and Media. Goodwill related to our Marketplaces reporting unit was $17.1 million as of March 31, 2020. Goodwill related to our Media reporting unit was $2.3 million and was recorded in connection with the acquisition of Well+Good in June 2018.

Intangible assets consisted of the following (in thousands):


	March 31, 2020
	Gross carrying		Accumulated		Net carrying
	amount		amortization		amount
Customer relationships	$	4,003	$	(3,288)	$	715
Artist relationships		12,217		(11,395)		822
Media content		91,491		(91,344)		147
Technology		6,204		(6,202)		2
Non-compete agreements		25		(25)		—
Trade names		18,241		(8,080)		10,161
	$	132,181	$	(120,334)	$	11,847


	December 31, 2019
	Gross carrying		Accumulated		Net carrying
	amount		amortization		amount
Customer relationships	$	4,003	$	(3,074)	$	929
Artist relationships		12,230		(11,336)		894
Media content		91,491		(91,333)		158
Technology		6,204		(6,156)		48
Non-compete agreements		25		(25)		—
Trade names		18,276		(7,716)		10,560
	$	132,229	$	(119,640)	$	12,589

Identifiable finite-lived intangible assets are amortized on a straight-line basis over their estimated useful lives commencing on the date that the asset is available for its intended use.

Total amortization expense for the periods shown below includes (in thousands):


	Three months ended March 31,
	2020		2019
Service costs	$	13	$	67
Sales and marketing		285		302
Product development		46		162
General and administrative		389		386
Total amortization	$	733	$	917