Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019
Cash flows from operating activities:
Net Loss	$ (6,138)	$ (19,919)
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation and amortization	23,974	25,084
Provision for credit losses and inventory	1,056	646
Stock-based compensation expense	1,814	2,164
Change in fair value of derivative instruments	(4,205)	5,992
Amortization of discount and debt issuance cost	(103)	(429)
Gain on disposal of property and equipment	(2,298)	(3,967)
Gain from sale of certain assets of subsidiary	(176)
Loss from equity method investments	357	500
Non-cash lease expense	1,373	1,695
Deferred income taxes	60
Changes in operating assets and liabilities, net of assets and liabilities acquired and disposed:
Accounts and other receivables	73,904	9,361
Inventory	218	656
Prepaid expenses and other assets	365	(1,027)
Operating lease liabilities	(1,604)	(1,860)
Accounts payable	(10,572)	560
Deferred revenue	(8,787)	(2,723)
Accrued expenses and other	(19,479)	(7,950)
Net cash provided by operating activities	49,759	8,783
Cash flows from investing activities:
Purchases of short-term investments	(45,293)	(72,029)
Maturities and sales of short-term investments	85,850	71,666
Purchases of and deposits on property and equipment	(6,354)	(7,743)
Loans made to customers	(40)
Payments on and proceeds from sales of loans receivable	1,226	(281)
Cash received from sale of certain assets of subsidiary, net	4,951	5,016
Proceeds from disposal of property and equipment	3,224	6,337
Net cash provided by investing activities	43,564	2,966
Cash flows from financing activities:
Issuances of common stock	235	179
Repurchase of common stock	(10,650)
Proceeds from debt instruments	200	3,394
Repayments of debt instruments and finance lease obligations	(52,960)	(3,533)
Fees paid for debt issuance costs		(29)
Net cash provided by (used in) financing activities	(63,175)	11
Effect of exchange rates on cash, cash equivalents, and restricted cash	(199)	130
Net increase in cash, cash equivalents and restricted cash	29,949	11,890
Cash, cash equivalents and restricted cash, beginning of period	53,222	34,624
Cash, cash equivalents and restricted cash, end of period	83,171	46,514
Supplemental disclosure of cash flow information:
Income taxes paid	65	32
Interest paid, net of $178 and $57 capitalized, respectively	$ 3,906	$ 2,590