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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 $ (47,229) $ (23,700)
Adjustments to reconcile net loss to net cash (used in) provided by operating activities:    
Depreciation and amortization 10,460 9,112
Non-cash interest expenses and related amortization 2,268 1,839
Share-based compensation expense 27,702 21,941
Non-cash loss on exchange of warrants   1,273
Write-off of long-lived assets 3,626 4,055
Provision for bad debts 2,352 666
Deferred income tax benefit   (11,561)
Changes in assets and liabilities:    
Accounts receivable (8,542) (3,301)
Prepaid expenses and other current assets (262) 545
Other non-current assets 249 (549)
Trade accounts payable (2,325) 5,027
Accrued expenses and other current liabilities 8,641 (533)
Deferred revenue 126 (428)
Net cash (used in) provided by operating activities (2,934) 4,386
CASH FLOWS FROM INVESTING ACTIVITIES:    
Purchase of property and equipment (1,144) (722)
Capitalized costs included in intangible assets (5,512) (7,980)
Acquisition, net of cash acquired   (50)
Deposits as collateral   (750)
Net cash used in investing activities (6,656) (9,502)
CASH FLOWS FROM FINANCING ACTIVITIES:    
Proceeds from issuance of shares, net of issuance costs   4,724
Proceeds for debt obligations, net of debt costs 14,039 (682)
Repayments of long-term debt (3,472) (1,688)
Taxes paid related to net share settlement of vesting of restricted stock units (743) (305)
Net cash provided by financing activities 9,824 2,049
Net increase (decrease) in cash and cash equivalents 234 (3,067)
Cash and cash equivalents at beginning of period 10,089 13,462
Cash and cash equivalents at end of period 10,323 10,395
SUPPLEMENTAL DISCLOSURE INFORMATION    
Cash paid for interest 4,940 3,795
Share-based compensation expense capitalized in intangible assets $ 1,002 868
Issuance of common stock to a vendor for services rendered   146
Fair value of acquisition consideration   21,206
Warrants issued in relation to the term loan   $ 492