Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Cash flows from operating activities
Net loss	$ (6,773)	$ (9,935)
Adjustments to reconcile net loss including non-controlling interests to net cash provided by operating activities:
Depreciation and amortization of property and equipment	14,985	10,308
Amortization of intangible assets	911	865
Bad debt expense	2	0
Loss on disposal of fixed assets	9	19
Stock-based compensation	3,044	3,605
Change in deferred income taxes	121	140
Changes in operating assets and liabilities:
Accounts receivable	14,844	845
Prepaid expenses and other assets	(301)	(149)
Accounts payable	(2,434)	4,659
Accrued expenses and other liabilities	(1,132)	726
Deferred revenue	2,256	29,954
Net cash provided by operating activities	25,532	41,037
Cash flows from investing activities
Purchases of property and equipment	(17,491)	(45,522)
Payments for asset acquisition	(1,150)	0
Net cash used in investing activities	(18,641)	(45,522)
Cash flows from financing activities
Proceeds from credit facility	0	5,000
Principal payments on credit facility	(5,438)	(219)
Debt issuance costs	0	(124)
Proceeds from exercise of stock options	439	1,470
Payments of capital leases and notes payable	(844)	(718)
Payments of withholding tax on net issuance of restricted stock units	(1,562)	(999)
Net cash (used in) provided by financing activities	(7,405)	4,410
Effect of exchange rates on cash	7	8
Net decrease in cash and cash equivalents	(507)	(67)
Cash and cash equivalents at beginning of period	19,485	14,718
Cash and cash equivalents at end of period	18,978	14,651
Supplemental disclosure of non-cash investing and financing activities
Property and equipment costs in accounts payable, accrued expenses and other liabilities	13,797	18,831
Purchase of equipment and prepaid maintenance services under capital financing arrangements	574	1,372
Non-controlling interest distributions declared but unpaid	$ 125	$ 0