Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Current assets:
Cash and cash equivalents	$ 2,255,951	$ 2,481,269
Restricted cash	146,013	118,633
Available-for-sale securities, at fair value (amortized cost $736,983 and allowance for credit losses of $0 at June 30, 2022 and amortized cost $1,242,933 and allowance for credit losses of $0 at December 31, 2021)	715,906	1,240,265
Equity securities	134,342	147,995
Accounts receivable	61,502	92,675
Inventory	429,549	269,163
Contract assets	38,961	38,637
Prepaid expenses and other current assets	111,846	59,888
Total current assets	3,894,070	4,448,525
Restricted cash	559,713	532,292
Property, plant, and equipment, net	431,492	255,623
Right of use assets related to finance leases, net	44,201	32,494
Right of use assets related to operating leases, net	241,421	212,537
Equipment related to power purchase agreements and fuel delivered to customers, net	83,159	72,902
Contract assets	182	120
Goodwill	235,026	220,436
Intangible assets, net	204,213	158,208
Investments in non-consolidated entities and non-marketable equity securities	37,007	12,892
Other assets	3,920	4,047
Total assets	5,734,404	5,950,076
Current liabilities:
Accounts payable	146,166	92,307
Accrued expenses	98,341	79,237
Deferred revenue and other contract liabilities	60,315	116,377
Operating lease liabilities	37,214	30,822
Finance lease liabilities	6,324	4,718
Finance obligations	46,784	42,040
Current portion of long-term debt	980	15,252
Loss accrual for service contracts and other current liabilities	31,645	39,800
Total current liabilities	427,769	420,553
Deferred revenue and other contract liabilities	67,390	66,713
Operating lease liabilities	193,333	175,635
Finance lease liabilities	32,972	24,611
Finance obligations	219,622	211,644
Convertible senior notes, net	193,269	192,633
Long-term debt	91,677	112,794
Contingent consideration, loss accrual for service contracts, and other liabilities	169,791	139,797
Total liabilities	1,395,823	1,344,380
Stockholders' equity:
Common stock, $0.01 par value per share; 1,500,000,000 shares authorized; Issued (including shares in treasury): 595,709,539 at June 30, 2022 and 594,729,610 at December 31, 2021	5,958	5,947
Additional paid-in capital	7,163,486	7,070,710
Accumulated other comprehensive loss	(28,989)	(1,532)
Accumulated deficit	(2,726,688)	(2,396,903)
Less common stock in treasury: 17,210,049 at June 30, 2022 and 17,074,710 at December 31, 2021	(75,186)	(72,526)
Total stockholders' equity	4,338,581	4,605,696
Total liabilities and stockholders' equity	$ 5,734,404	$ 5,950,076