CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents	$ 351,879	$ 371,301
Restricted cash	3,076
Accounts receivable, net of allowance for credit losses of $1,413 and $1,921, respectively	43,672	44,185
Prepaid expenses and other current assets	37,491	40,851
Total current assets	436,118	456,337
Property and equipment, net	454,710	430,335
Right-of-use leased assets	103,666	99,666
Deposits and other assets	14,255	14,139
Total assets	1,008,749	1,000,477
Current liabilities:
Accounts payable	11,639	9,775
Accrued and other current liabilities	57,510	51,029
Installment payment agreement, current portion, net of discounts of $18 and $136, respectively	1,850	6,786
Current maturities, operating lease liabilities	11,312	11,151
Current maturities, finance lease obligations	16,685	15,702
Total current liabilities	98,996	94,443
Operating lease liabilities, net of current maturities	115,065	111,318
Finance lease obligations, net of current maturities	222,854	203,438
Other long-term liabilities	28,989	14,792
Total liabilities	1,365,516	1,293,643
Commitments and contingencies:
Stockholders' equity:
Common stock, $0.001 par value; 75,000,000 shares authorized; 47,663,276 and 47,214,077 shares issued and outstanding, respectively	48	47
Additional paid-in capital	540,575	515,867
Accumulated other comprehensive income - foreign currency translation	(8,558)	(1,306)
Accumulated deficit	(888,832)	(807,774)
Total stockholders' deficit	(356,767)	(293,166)
Total liabilities and stockholders' deficit	1,008,749	1,000,477
2022 Notes
Current liabilities:
Senior secured notes		444,492
Senior unsecured 2024 Notes
Current liabilities:
Senior unsecured Notes	402,447	$ 425,160
Senior secured 2026 Notes
Current liabilities:
Senior secured notes	$ 497,165