Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Cash and cash equivalents	$ 91,596	$ 103,828
Restricted cash, current	25,860	44,387
Accounts receivable	36,804	30,317
Customer financing receivable	5,398	5,209
Prepaid expense and other current assets	23,003	26,676
Property, plant and equipment, net	477,765	497,789
Customer financing receivable, non-current	69,963	72,677
Restricted cash, non-current	32,416	32,397
Other long-term assets	38,386	37,460
Accounts payable	53,798	48,582
Accrued other current liabilities	54,832	67,649
Deferred revenue and customer deposits	94,582	118,106
Current portion of debt	28,376	18,747
Current portion of debt from related parties	1,630	1,389
Derivative liabilities	188,199	156,552
Deferred revenue and customer deposits	301,550	309,843
Long-term portion of debt	930,123	921,205
Long-term portion of debt from related parties	107,141	105,650
Other long-term liabilities	$ 52,153	$ 52,915
Convertible redeemable preferred stock, shares authorized (in shares)	80,461,609	80,461,609
Convertible redeemable preferred stock, shares issued (in shares)	71,740,162	71,740,162
Convertible redeemable preferred stock, shares outstanding (in shares)	71,740,162	71,740,162
Convertible redeemable preferred stock, aggregate liquidation preference	$ 1,441,757	$ 1,441,757
Common stock, par value (in dollars per share)	$ 0.0001	$ 0.0001
Common stock, authorized (in shares)	113,333,333	113,333,333
Common stock, issued (in shares)	10,570,841	10,353,269
Common stock, outstanding (in shares)	10,570,841	10,353,269
Variable Interest Entity, Primary Beneficiary
Cash and cash equivalents	$ 9,691	$ 9,549
Restricted cash, current	4,735	7,969
Accounts receivable	7,293	7,680
Customer financing receivable	5,398	5,209
Prepaid expense and other current assets	1,802	6,365
Property, plant and equipment, net	414,684	430,464
Customer financing receivable, non-current	69,963	72,677
Restricted cash, non-current	27,604	26,748
Other long-term assets	4,423	3,767
Accounts payable	482	520
Accrued other current liabilities	1,569	2,378
Deferred revenue and customer deposits	786	786
Current portion of debt	19,655	17,057
Current portion of debt from related parties	1,630	1,389
Derivative liabilities	2,528	5,060
Deferred revenue and customer deposits	9,092	9,482
Long-term portion of debt	333,102	342,050
Long-term portion of debt from related parties	39,671	35,551
Other long-term liabilities	$ 1,514	$ 1,226