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Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)
$ in Thousands
 9 Months Ended
Sep. 30, 2019
Sep. 30, 2018
Cash flows provided by operating activities:    
Net loss $ (754) $ (311)
Adjustments to reconcile net loss to net cash provided by operating activities:    
Depreciation and amortization 2,191 2,068
Provision for doubtful accounts 144 53
Amortization of operating lease right-of-use assets 217
Scrap expense 5 30
Transfer of fixed assets to sales-type lease 7 10
Stock-based compensation 172 368
Amortization of debt issuance costs 7 57
Loss from disposition of equipment and capitalized software 42 53
Changes in assets and liabilities:    
Accounts receivable 222 (617)
Site equipment to be installed 475 (267)
Operating lease liabilities (111)
Prepaid expenses and other assets (66) 40
Accounts payable and accrued liabilities (196) 69
Income taxes 4 24
Deferred costs 84 305
Deferred revenue (541) (1,209)
Deferred rent (148)
Other liabilities (141) 3
Net cash provided by operating activities 1,761 528
Cash flows used in investing activities:    
Capital expenditures (111) (291)
Capitalized software development expenditures (882) (690)
Proceeds from sales of equipment 29
Net cash used in investing activities (964) (981)
Cash flows (used in) provided by financing activities:    
Net proceeds from issuance of common stock related to registered direct offering 1,375
Proceeds from long-term debt 4,000
Principal payments on long-term debt (750) (5,019)
Debt issuance costs on long-term debt (23)
Principal payments on financing leases (39) (132)
Payment of preferred stockholders dividends (8) (8)
Tax withholding related to net share settlement of vested restricted stock units (29) (12)
Net cash (used in) provided by financing activities (826) 181
Effect of exchange rate on cash and cash equivalents 27 (28)
Net decrease in cash, cash equivalents and restricted cash (2) (300)
Cash, cash equivalents and restricted cash at beginning of period 2,786 3,378
Cash, cash equivalents and restricted cash at end of period 2,784 3,078
Supplemental disclosures of cash flow information: Cash paid during the period for:    
Interest 195 255
Income taxes 26 17
Supplemental disclosure of non-cash investing and financing activities:    
Initial measurement of operating lease right-of-use assets and liabilities 3,458
Site equipment transferred to fixed assets 458 1,292
Assets acquired under financing lease 5
Assets acquired under operating lease 57
Reconciliation of cash, cash equivalents and restricted cash at end of period:    
Cash and cash equivalents 2,533 3,078
Restricted cash 51
Restricted cash, long-term 200
Total cash, cash equivalents and restricted cash at end of period $ 2,784 $ 3,078