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Consolidated Statements of Cash Flows - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Cash flows provided by operating activities:    
Net loss $ (259) $ (1,077)
Adjustments to reconcile net loss to net cash provided by operating activities:    
Depreciation and amortization 2,764 2,317
Provision for doubtful accounts 78 72
Scrap expense 30 226
Transfer of fixed assets to sales-type lease 23
Stock-based compensation 443 457
Amortization of debt issuance costs 59 60
Common stock issued for compensation in lieu of cash payment 209
Loss from the sale or disposition of assets 212 13
Impairment of goodwill 261
Loss from disposition of capitalized software 23 5
Changes in assets and liabilities:    
Accounts receivable (507) 142
Site equipment to be installed 431 (3,932)
Prepaid expenses and other assets 29 443
Accounts payable and accrued liabilities (186) (586)
Income taxes payable (10) 9
Deferred costs 350 130
Deferred revenue (2,227) 2,349
Deferred rent (190) (189)
Other liabilities 41 (99)
Net cash provided by operating activities 1,365 549
Cash flows used in investing activities:    
Capital expenditures (648) (728)
Capitalized software development expenditures (964) (724)
Proceeds from sale of assets 33
Net cash used in investing activities (1,579) (1,452)
Cash flows used in financing activities:    
Net proceeds from issuance of common stock related to registered direct offering 1,375 1,773
Proceeds from long-term debt 4,000 50
Payments on long-term debt (5,373) (3,038)
Debt issuance costs on long-term debt (23) (82)
Principal payments on capital lease (249) (155)
Tax withholding related to net share settlement of vested restricted stock units (17)
Dividends paid to Series A preferred shareholders (16) (16)
Net cash used in financing activities (303) (1,468)
Net decrease in cash, cash equivalents and restricted cash (517) (2,371)
Effect of exchange rate on cash and cash equivalents (75) 63
Cash, cash equivalents and restricted cash at beginning of year 3,378 5,686
Cash, cash equivalents and restricted cash at end of year 2,786 3,378
Supplemental disclosures of cash flow information: Cash paid during the period for:    
Interest 336 458
Income taxes 17 36
Supplemental disclosure of non-cash investing and financing activities:    
Site equipment transferred to fixed assets 1,865 1,838
Capitalized tenant improvements paid by landlord 1,131
Equipment acquired under capital lease $ 5 $ 81