Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Cash flows from operating activities
Net loss	$ (17,870)	$ (22,779)
Adjustments to reconcile net loss including non-controlling interests to net cash provided by operating activities:
Depreciation and amortization of property and equipment	49,244	34,801
Amortization of intangible assets	2,673	2,582
Bad debt expense (recovery)	88	(47)
Other	51	0
Impairment loss and loss on disposal of fixed assets, net	442	49
Stock-based compensation	11,016	9,690
Change in deferred income taxes	305	324
Changes in operating assets and liabilities:
Accounts receivable	3,804	(462)
Prepaid expenses and other assets	(1,816)	(2,182)
Accounts payable	(1,330)	3,464
Accrued expenses and other liabilities	6,920	4,018
Deferred revenue	13,897	64,140
Net cash provided by operating activities	67,424	93,598
Cash flows from investing activities
Purchases of property and equipment	(54,691)	(92,045)
Payments for asset acquisition	(1,150)	0
Net cash used in investing activities	(55,841)	(92,045)
Cash flows from financing activities
Proceeds from credit facility	0	5,000
Principal payments on credit facility	(10,875)	(5,656)
Proceeds from exercise of stock options	7,993	1,981
Debt issuance costs	0	(124)
Payments of capital leases and notes payable	(2,952)	(1,889)
Payments of withholding tax on net issuance of restricted stock units	(3,480)	(2,112)
Payments to non-controlling interest	(125)	(286)
Net cash used in financing activities	(9,439)	(3,086)
Effect of exchange rates on cash	5	15
Net increase (decrease) in cash and cash equivalents	2,149	(1,518)
Cash and cash equivalents at beginning of period	19,485	14,718
Cash and cash equivalents at end of period	21,634	13,200
Supplemental disclosure of non-cash investing and financing activities
Property and equipment costs in accounts payable, accrued expenses and other liabilities	19,438	19,367
Purchase of equipment and prepaid maintenance services under capital financing arrangements	$ 2,141	$ 4,560