5. Capitalized Content Development Costs

Capitalized content development costs consisted of the following as of:

	December 31, 2015							December 31, 2014
	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount
	(in thousands)
Capitalized content development costs	$	24,796	$	(10,931	)	$	13,865	$	16,835	$	(7,379	)	$	9,456
Capitalized content development costs in process		4,256		—			4,256		3,699		—			3,699

Total	$	29,052	$	(10,931	)	$	18,121	$	20,534	$	(7,379	)	$	13,155

The Company recorded amortization expense related to capitalized content development costs of $4.5 million, $3.2 million and $2.2 million for the years ended December 31, 2015, 2014 and 2013, respectively. The Company performed an impairment assessment in the fourth quarter of 2013 and determined that certain capitalized content development costs were not recoverable, and recorded an impairment charge of $0.8 million in that period.

As of December 31, 2015, the estimated future amortization expense for capitalized content development costs is as follows (in thousands):

2016	$	4,245
2017		3,650
2018		3,136
2019		2,166
2020		668

Total	$	13,865