v3.8.0.1
Consolidated Statements of Cash Flows - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Cash flows from operating activities      
Net loss $ (18,776) $ (26,983) $ (22,178)
Adjustments to reconcile net loss including non-controlling interests to net cash provided by operating activities:      
Depreciation and amortization of property and equipment 69,097 49,202 38,293
Amortization of intangible assets 3,498 3,448 3,576
Bad debt expense 773 116 304
Other 86 0 0
Impairment loss and loss on disposal of fixed assets, net 1,158 66 242
Stock-based compensation 14,215 12,805 9,398
Change in deferred income taxes (2,575) 303 320
Change in fair value of contingent consideration 0 0 (114)
Changes in operating assets and liabilities:      
Accounts receivable 16,046 526 (16,050)
Prepaid expenses and other assets (841) (835) (3,459)
Accounts payable (1,554) (465) 3,845
Accrued expenses and other liabilities 9,313 6,017 4,569
Deferred revenue 7,288 71,005 79,829
Net cash provided by operating activities 97,728 115,205 98,575
Cash flows from investing activities      
Purchases of property and equipment (73,308) (107,271) (103,116)
Proceeds from sales of marketable securities 0 0 1,614
Payments for asset acquisitions (1,150) (60) 0
Net cash used in investing activities (74,458) (107,331) (101,502)
Cash flows from financing activities      
Proceeds from credit facility 0 5,000 20,000
Principal payments on credit facility (16,094) (5,656) (5,875)
Proceeds from exercise of stock options 9,244 2,984 1,373
Debt issuance costs 0 (124) (62)
Payments of capital leases and notes payable (4,207) (2,212) (814)
Payments of withholding tax on net issuance of restricted stock units (4,872) (2,827) (2,512)
Payment of holdback consideration 0 0 (1,600)
Payments to non-controlling interest (125) (286) (500)
Purchase of non-controlling interests 0 0 (1,150)
Payment of other acquisition related consideration 0 0 (17)
Net cash (used in) provided by financing activities (16,054) (3,121) 8,843
Effect of exchange rates on cash (16) 14 (47)
Net increase in cash and cash equivalents 7,200 4,767 5,869
Cash and cash equivalents at beginning of year 19,485 14,718 8,849
Cash and cash equivalents at end of year 26,685 19,485 14,718
Supplemental disclosure of cash flow information      
Cash paid for interest 239 418 347
Cash paid for taxes, net of refunds 304 163 62
Supplemental disclosure of non-cash investing and financing activities      
Property and equipment costs in accounts payable, accrued expenses and other liabilities 20,554 16,976 45,417
Purchase of equipment and prepaid maintenance services under capital financing arrangements 7,944 6,629 3,839
Capitalized stock-based compensation included in property and equipment costs 696 727 778
Purchase of intangible asset $ 0 $ 1,150 $ 0