Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Current assets:
Cash and cash equivalents	$ 152,492	$ 139,496
Restricted cash	50,634	54,813
Accounts receivable	45,522	25,448
Inventory	114,571	72,391
Prepaid expenses and other current assets	31,436	21,192
Total current assets	394,655	313,340
Restricted cash	180,127	175,191
Property, plant, and equipment, net of accumulated depreciation of $19,203 and $17,417, respectively	60,018	14,959
Leased property, net	274,721	244,740
Goodwill	70,402	8,842
Intangible assets, net	38,574	5,539
Other assets	11,817	8,573
Total assets	1,030,314	771,184
Current liabilities:
Accounts payable	39,812	40,376
Accrued expenses	23,320	14,213
Deferred revenue	14,902	11,691
Finance obligations	57,695	49,507
Current portion of long-term debt	50,933	26,461
Other current liabilities	21,692	8,543
Total current liabilities	208,354	150,791
Deferred revenue	25,038	23,369
Finance obligations	300,653	265,228
Convertible senior notes, net	142,704	110,246
Long-term debt	101,844	85,708
Other liabilities	11,756	13
Total liabilities	790,349	635,355
Stockholders' equity:
Common stock, $0.01 par value per share; 750,000,000 shares authorized; Issued (including shares in treasury): 348,201,792 at June 30, 2020 and 318,637,560 at December 31, 2019	3,482	3,186
Additional paid-in capital	1,658,532	1,507,116
Accumulated other comprehensive income	1,271	1,400
Accumulated deficit	(1,391,961)	(1,345,807)
Less common stock in treasury: 15,292,591 at June 30, 2020 and 15,259,045 at December 31, 2019	(31,359)	(31,216)
Total stockholders ' equity	239,965	134,679
Total liabilities, redeemable preferred stock, and stockholders ' equity	$ 1,030,314	771,184
Series C Redeemable Convertible Preferred Stock
Redeemable preferred stock:
Redeemable preferred stock		709
Series E Redeemable Convertible Preferred Stock
Redeemable preferred stock:
Redeemable preferred stock		$ 441