v3.8.0.1

Goodwill and Amortizable Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2017

Goodwill and Amortizable Intangible Assets

Schedule of amortizable intangible assets

				December 31, 2017									December 31, 2016
		Estimated Average Useful Life (in years)		Gross Carrying Amount			Accumulated Amortization			Net Carrying Amount			Gross Carrying Amount			Accumulated Amortization			Net Carrying Amount
				(in thousands)
Capitalized technology		3		$	27,108		$	(9,486	)	$	17,622		$	17,100		$	(7,822	)	$	9,278
Capitalized content development		4			55,872			(21,417	)		34,455			37,956			(15,367	)		22,589
University client relationships		9			29,443			(1,636	)		27,807			—			—			—
Trade names and domain names		10			12,119			(1,242	)		10,877			2,761			(497	)		2,264
​	​	​	​	​	​	​	​	​	​	​	​	​	​	​	​	​	​	​	​	​	​
Total amortizable intangible assets, net				$	124,542		$	(33,781	)	$	90,761		$	57,817		$	(23,686	)	$	34,131
​	​	​	​	​	​	​	​	​	​	​	​	​	​	​	​	​	​	​	​	​	​
​	​	​	​	​	​	​	​	​	​	​	​	​	​	​	​	​	​	​	​	​	​

Schedule of estimated future amortization expense for amortizable intangible assets

        As of December 31, 2017, the estimated future amortization expense for amortizable intangible assets placed in service is as follows (in thousands):

2018		$	17,571
2019			15,595
2020			12,102
2021			8,216
2022			5,404
Thereafter			16,296
​	​	​	​	​
Total		$	75,184
​	​	​	​	​
​	​	​	​	​

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- Definition

Tabular disclosure of assets, excluding financial assets and goodwill, lacking physical substance with a finite life, by either major class or business segment.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 1
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- Definition

Tabular disclosure of the amount of amortization expense expected to be recorded in succeeding fiscal years for finite-lived intangible assets.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275

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