7. ACQUIRED INTANGIBLE ASSETS, NET

The Group’s intangible assets, presented in the following table, arose from the acquisition of Shanghai Ouku on May 24, 2010 , the acquisition of the fashion-focused site business from Ador Inc. on December 31, 2013 and the acquisition of Ezbuy on December 10, 2018.


	December 31, 2018								December 31, 2019
	Gross				Accumulated		Net		Gross				Accumulated		Net
	carrying		Accumulated		impairment		carrying		carrying		Accumulated		impairment		carrying
	amount		amortization		loss		amount		amount		amortization		loss		amount
Intangible assets not subject to amortization:
Trademark/Domain Name	$	1,220	$	—	$	(1,010)	$	210	$	1,220	$	—	$	(1,010)	$	210

Intangible assets subject to amortization:
- Technology Platform		90		(90)		—		—		90		(90)		—		—
- Non-compete Agreement		9		(7)		(2)		—		9		(7)		(2)		—
- Customer Base		32		(22)		(10)		—		32		(22)		(10)		—
- Technology		2,951		(85)		—		2,866		2,915		(660)		—		2,255
- Branding		6,871		(57)		—		6,814		6,786		(735)		—		6,051
- In-progress Orders		192		(192)		—		—		190		(190)		—		—
- Members		20		(20)		—		—		20		(20)		—		—
	$	11,385	$	(473)	$	(1,022)	$	9,890	$	11,262	$	(1,724)	$	(1,022)	$	8,516

The amortization expenses incurred for the years ended December 31, 2017, 2018 and 2019 were $5, $298 and $1,264, respectively. For the years ended December 31, 2017, 2018 and 2019, no impairment loss was recorded.

The estimated amortization expense for intangible assets in each of the next five years are $1,264, $1,264, $1,264, $1,216, and $684 respectively.