Revenue Recognition (Tables)

3 Months Ended

Mar. 31, 2020

Revenue from Contract with Customer [Abstract]

Schedule of New Accounting Pronouncements and Changes in Accounting Principles

Deferred revenue and customer deposits as of March 31, 2020 and December 31, 2019 consisted of the following (in thousands):

	March 31, 2020		December 31, 2019
Deferred revenue	$	170,034	$	168,223
Deferred incentive revenue	7,232		7,397
Customer deposits	42,707		39,101
Deferred revenue and customer deposits	$	219,973	$	214,721

Deferred Revenue Activity

Deferred revenue activity during the quarters ended March 31, 2020 and 2019 consisted of the following (in thousands):

	March 31, 2020			March 31, 2019
				As Restated
Beginning balance	$	168,223		$	140,130
Additions	138,113			118,359
Revenue recognized	(136,302		)	(117,755		)
Ending balance	$	170,034		$	140,734

Revenue by Source

We disaggregate revenue from contracts with customers into four revenue categories: (i) product, (ii) installation, (iii) services and (iv) electricity (in thousands):

	Three Months Ended March 31,
	2020		2019
			As Restated
Revenue from contracts with customers:
Product revenue	$	99,559	$	90,926
Installation revenue	16,618		12,219
Services revenue	25,147		23,467
Electricity revenue	—		3,418
Total revenue from contract with customers	141,324		130,030
Revenue from contracts accounted for as leases:
Electricity revenue	15,375		16,971
Total revenue	$	156,699	$	147,001