Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Cash flows from operating activities
Net loss	$ (4,725)	$ (5,239)
Adjustments to reconcile net loss including non-controlling interests to net cash provided by operating activities:
Depreciation and amortization of property and equipment	18,646	19,009
Amortization of intangible assets	1,111	1,131
Impairment loss and loss on disposal of fixed assets and intangible assets held for sale, net	(30)	91
Stock-based compensation	1,537	2,344
Amortization of deferred financing costs and debt discount, net of amounts capitalized	2,343	2,256
Non-cash operating lease cost	639	438
Gains and amortization of premiums/discounts for marketable securities	(81)	(207)
Change in deferred income taxes	(12)	0
Changes in operating assets and liabilities:
Accounts receivable	(4,912)	4,307
Prepaid expenses and other assets	(1,071)	(13)
Accounts payable	(166)	1,397
Accrued expenses and other liabilities	(3,253)	(1,481)
Deferred revenue	9,801	439
Operating lease liabilities	(794)	(729)
Net cash provided by operating activities	19,033	23,743
Cash flows from investing activities
Purchases of marketable securities	(15,032)	(36,665)
Proceeds from maturities of marketable securities	25,965	0
Purchases of property and equipment	(22,592)	(32,390)
Net cash used in investing activities	(11,659)	(69,055)
Cash flows from financing activities
Debt issuance costs	0	(1,687)
Proceeds from credit facility	100,000	3,500
Principal payments on credit facility	0	(194)
Payments of acquisition related consideration	0	(1,952)
Proceeds from exercise of stock options	185	6
Payments of finance leases and notes payable	(1,285)	(1,853)
Payments of withholding tax on net issuance of restricted stock units	(461)	(32,907)
Payments to non-controlling interest	(262)	0
Net cash provided by (used in) financing activities	98,177	(35,087)
Effect of exchange rates on cash	(36)	3
Net increase (decrease) in cash and cash equivalents	105,515	(80,396)
Cash and cash equivalents at beginning of period	40,401	149,412
Cash and cash equivalents at end of period	145,916	69,016
Supplemental disclosure of non-cash investing and financing activities
Property and equipment costs included in accounts payable, accrued expenses and other liabilities	39,754	39,309
Capitalized stock-based compensation included in property and equipment costs	149	230
Purchase price for business acquisition included in accrued expenses and other liabilities	0	2,961
Debt issuance costs included in accrued expenses and other liabilities	0	125
Financed sale of intangible assets held for sale	$ 277	$ 311