v3.8.0.1
Consolidated Statements of Cash Flows - USD ($)
12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Cash flows from operating activities:      
Net loss $ (9,980,000) $ (6,860,000) $ (6,191,000)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:      
Depreciation and amortization 3,121,000 2,551,000 2,264,000
Impairment of property and equipment 793,000    
Stock-based compensation 628,000 83,000 137,000
Amortization of debt issuance costs 132,000 131,000 88,000
Remeasurement of convertible preferred stock warrant liability 3,725,000 524,000  
Loss on early extinguishment of debt 479,000   77,000
Loss on disposal of property and equipment   27,000 30,000
Changes in operating assets and liabilities:      
Accounts receivable (1,518,000) 255,000 (1,845,000)
Prepaid expenses and other assets (247,000) (90,000) (115,000)
Accounts payable 291,000 410,000 69,000
Accrued expenses and other current liabilities 1,535,000 1,049,000 334,000
Deferred revenue 4,428,000 4,177,000 1,649,000
Net cash provided by (used in) operating activities 3,387,000 2,257,000 (3,503,000)
Cash flows from investing activities:      
Purchase of property and equipment (6,430,000) (4,476,000) (2,155,000)
Investment in intangible and other assets (76,000) (78,000) (25,000)
Net cash used in investing activities (6,506,000) (4,554,000) (2,180,000)
Cash flows from financing activities:      
Proceeds from initial public offering, net of commissions and discounts 32,426,000    
Proceeds from line of credit     1,900,000
Proceeds from notes payable 1,500,000 2,000,000 10,000,000
Repayment of notes payable (13,500,000)   (3,060,000)
Payment of debt issuance costs (30,000) (17,000) (319,000)
Payment on debt extinguishment costs (149,000)    
Proceeds from issuance of Series B-1 convertible preferred stock, net of issuance costs     1,994,000
Repayment of line of credit     (1,900,000)
Payments of initial public offering costs (1,870,000)    
Proceeds from exercise of stock options 55,000 25,000 31,000
Proceeds from ESPP 319,000    
Net cash provided by financing activities 18,751,000 2,008,000 8,646,000
Increase in cash and cash equivalents 15,632,000 (289,000) 2,963,000
Effect of exchange rate on cash and cash equivalents 70,000 30,000  
Cash and cash equivalents at beginning of year 3,865,000 4,124,000 1,161,000
Cash and cash equivalents at end of period 19,567,000 3,865,000 4,124,000
Supplemental cash flow disclosures:      
Cash paid for interest 1,235,000 $ 1,186,000 374,000
Supplemental disclosure of non-cash financing activities:      
Conversion of convertible preferred stock into common stock 42,075,000    
Reclassification of convertible preferred stock warrant liability into additional paid-in capital 5,711,000    
Issuance of warrants in connection with the issuance of notes payable $ 111,000   $ 147,000

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