Balance Sheet Components (Tables)

12 Months Ended

Dec. 31, 2019

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Inventory, net

The components of inventory consisted of the following (in thousands):

	December 31,
	2019		2018
			As Restated
Raw materials	$	67,829	$	50,856
Work-in-progress	21,207		18,676
Finished goods	20,570		65,733
	$	109,606	$	135,265

Prepaid Expense and Other Current Assets

Prepaid expenses and other current assets consisted of the following (in thousands):

	December 31,
	2019		2018
			As Restated
Government incentives receivable	$	893	$	1,001
Prepaid HW & SW maintenance	3,763		1,464
Receivables from employees	6,130		5,922
Other prepaid expense and other current assets	17,282		28,360
	$	28,068	$	36,747

Property, Plant and Equipment, Net

Depreciation is calculated using the straight-line method over the estimated depreciable lives of the respective assets as follows:

	Depreciable Lives
Energy Servers	15-21 years
Computers, software and hardware	3-5 years
Machinery and equipment	5-10 years
Furniture and fixtures	3-5 years
Leasehold improvements	1-10 years
Buildings	35 years

Property, plant and equipment, net consisted of the following (in thousands):

	December 31,
	2019			2018
				As Restated
Energy Servers	$	650,600		$	757,574
Computers, software and hardware	20,275			16,536
Machinery and equipment	101,650			99,209
Furniture and fixtures	8,339			4,337
Leasehold improvements	35,694			18,629
Building	40,512			40,512
Construction in progress	12,611			41,180
	869,681			977,977
Less: Accumulated depreciation	(262,622		)	(261,226		)
	$	607,059		$	716,751

Customer Financing Leases, Receivable

The components of investment in sales-type financing leases consisted of the following (in thousands):

	December 31,
	2019			2018
Total minimum lease payments to be received	$	76,886		$	100,816
Less: Amounts representing estimated executing costs	(19,931		)	(25,180		)
Net present value of minimum lease payments to be received	56,955			75,636
Estimated residual value of leased assets	890			1,051
Less: Unearned income	(1,990		)	(4,011		)
Net investment in sales-type financing leases	55,855			72,676
Less: Current portion	(5,108		)	(5,594		)
Non-current portion of investment in sales-type financing leases	$	50,747		$	67,082

Schedule of Customer Payments from Sales-Type Financing Leases

The future scheduled customer payments from sales-type financing leases were as follows as of December 31, 2019 (in thousands):

	2020		2021		2022		2023		2024		Thereafter
Future minimum lease payments, less interest	$	5,108	$	5,428	$	5,784	$	6,155	$	6,567	$	25,923

Other Long-Term Assets

Other long-term assets consisted of the following (in thousands):

	December 31,
	2019		2018
			As Restated
Prepaid and other long-term assets	$	29,153	$	34,093
Deferred commissions	5,007		1,083
Equity-method investments	5,733		6,046
Long-term deposits	1,759		1,660
	$	41,652	$	42,882

Accrued Warranty

Accrued warranty liabilities consisted of the following (in thousands):

	December 31,
	2019		2018
			As Restated
Product warranty	$	2,345	$	3,378
Product performance	7,536		6,290
Maintenance services contracts	453		8,300
	$	10,334	$	17,968

Changes in the product warranty and product performance liabilities were as follows (in thousands):

Balances at December 31, 2016 (As Revised)	$	8,082
Accrued warranty, net (As Revised)	5,979
Warranty expenditures during period (As Revised)	(6,740		)
Balances at December 31, 2017 (As Revised)	7,321
Accrued warranty, net (As Restated)	9,301
Warranty expenditures during period (As Restated)	(6,954		)
Balances at December 31, 2018 (As Restated)	9,668
Cumulative effect upon adoption of ASC 606	1,032
Accrued warranty, net	1,849
Warranty expenditures during period	(2,668		)
Balances at December 31, 2019	$	9,881

Accrued Other Current Liabilities

Accrued expenses and other current liabilities consisted of the following (in thousands):

	December 31,
	2019		2018
			As Restated
Compensation and benefits	$	17,173	$	16,742
Current portion of derivative liabilities	4,834		3,232
Sales related liabilities	416		1,421
Accrued installation	10,348		6,859
Sales tax liabilities	3,849		1,798
Interest payable	3,875		4,675
Other	29,789		32,111
	$	70,284	$	66,838

Other Long-Term Liabilities

Other long-term liabilities consisted of the following (in thousands):

	December 31,
	2019		2018
			As Restated
Delaware grant	$	10,469	$	10,469
Other	17,544		15,727
	$	28,013	$	26,196