The opening and closing balances of the Company’s accounts receivable and deferred revenue are as follows:

	Accounts Receivable			Deferred Revenue (current)			Deferred Revenue (non-current)
Opening balance as of January 1, 2020	$	22,919		$	119,851		$	57,766
Increase/(decrease), net		(7,528	)		(13,882	)		270
Ending balance as of March 31, 2020	$	15,391		$	105,969		$	58,036

The amount of revenue recognized in the three months ended March 31, 2020 that was included in the opening January 1, 2020 deferred revenue balance was $42.7 million. The vast majority of this revenue consists of deferred subscription revenue. The amount of revenue recognized from performance obligations satisfied in prior periods was not material.

The following table sets forth deferred revenue by reportable segment which represents the Company's unfulfilled performance obligations as of March 31, 2020 and the estimated revenue expected to be recognized in the future related to these performance obligations:

	As of March 31, 2020
	Total		Less than 1 Year		1-3 Years		3-5 Years		More than 5 Years
Literacy	$	41,256	$	32,782	$	8,089	$	381	$	4
E&E Language		55,065		33,498		8,961		2,743		9,863
Consumer Language		67,684		39,689		15,189		1,822		10,984
Total	$	164,005	$	105,969	$	32,239	$	4,946	$	20,851

In 2017, the Company entered into a series of agreements with SOURCENEXT Corporation, (“SOURCENEXT”), comprising a single performance obligation associated with the perpetual license of certain intellectual property, software, and product code for exclusive development and sale of language and education-related products in Japan. The Company estimated a 20 year period to recognize the performance obligation. As of March 31, 2020, deferred revenue associated with SOURCENEXT totaled $15.5 million, which will be recognized ratably through April 2037 and comprised the majority of the Consumer Language non-current deferred revenue. As this customer relationship progresses, the Company will prospectively reassess the recognition period as needed.

See Note 16 - “Segment Information” for further information on the disaggregation of revenue, including revenue by reportable segment and geographic area.