CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Current assets:
Cash and cash equivalents	$ 139,496	$ 38,602
Restricted cash	54,813	17,399
Accounts receivable	25,448	37,347
Inventory	72,391	47,910
Prepaid expenses and other current assets	21,192	14,357
Total current assets	313,340	155,615
Restricted cash	175,191	54,152
Property, plant, and equipment, net	14,959	12,869
Leased property, net	244,740	146,751
Goodwill	8,842	9,023
Intangible assets, net	5,539	3,890
Other assets	8,573	8,026
Total assets	771,184	390,326
Current liabilities:
Accounts payable	40,376	34,824
Accrued expenses	14,213	7,864
Deferred revenue	11,691	12,055
Finance obligations	49,507	74,264
Current portion of long-term debt	26,461	16,803
Other current liabilities	8,543	560
Total current liabilities	150,791	146,370
Deferred revenue	23,369	28,021
Common stock warrant liability		105
Finance obligations	265,228	118,076
Convertible senior notes, net	110,246	63,247
Long-term debt	85,708	133
Other liabilities	13	18
Total liabilities	635,355	355,970
Stockholders' equity:
Common stock, $0.01 par value per share; 750,000,000 shares authorized; Issued (including shares in treasury): 318,637,560 at December 31, 2019 and 234,160,661 at December 31, 2018	3,186	2,342
Additional paid-in capital	1,507,116	1,289,714
Accumulated other comprehensive income	1,400	1,584
Accumulated deficit	(1,345,807)	(1,260,290)
Less common stock in treasury: 15,259,045 at December 31, 2019 and 15,002,663 at December 31, 2018	(31,216)	(30,637)
Total stockholders' equity	134,679	2,713
Total liabilities, redeemable preferred stock, and stockholders' equity	771,184	390,326
Series C Redeemable Convertible Preferred Stock
Redeemable preferred stock:
Redeemable preferred stock	709	709
Series E Redeemable Convertible Preferred Stock
Redeemable preferred stock:
Redeemable preferred stock	$ 441	$ 30,934