Amortizable intangible assets as of March 31, 2015 and December 31, 2014 are as follows:



	Cost		Accumulated Amortization		Net		Weighted-Average Remaining Amortization Period (in years)
March 31, 2015
Member list	$	1,670	$	464	$	1,206	4.3
Content	140		78		62		1.3
Core technology	110		61		49		1.3
Data acquisition costs	2,598		1,638		960		1.4
Other intangible assets	300		108		192		1.9
Total amortizable intangible assets	$	4,818	$	2,349	$	2,469



	Cost		Accumulated Amortization		Net		Weighted-Average Remaining Amortization Period (in years)
December 31, 2014
Member list	$	1,670	$	394	$	1,276	4.6
Content	140		66		74		1.6
Core technology	110		52		58		1.6
Data acquisition costs	3,488		2,358		1,130		1.2
Other intangible assets	300		83		217		2.2
Total amortizable intangible assets	$	5,708	$	2,953	$	2,755