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Consolidated Statements of Cash Flows (Unaudited) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2017
Mar. 31, 2016
Cash flows used in operating activities:    
Net loss $ (90) $ (1,041)
Adjustments to reconcile net loss to net cash used in operating activities:    
Depreciation and amortization 579 757
Provision for doubtful accounts 26 24
Excess and obsolete site equipment to be installed expense 25
Stock-based compensation 117 113
Amortization of debt issuance costs 12 10
Issuance of common stock in lieu of cash for bonus compensation 164
Loss from disposition of equipment 5
Changes in assets and liabilities:    
Accounts receivable (863) 126
Site equipment to be installed 208 (115)
Prepaid expenses and other assets (148) (76)
Accounts payable and accrued liabilities (450) (209)
Income taxes payable (22) (1)
Deferred costs 53 29
Deferred revenue (62) (7)
Deferred rent (45) (40)
Other liabilities 55 (104)
Net cash used in operating activities (466) (504)
Cash flows used in investing activities:    
Capital expenditures (97) (177)
Software development expenditures (152) (99)
Net cash used in investing activities (249) (276)
Cash flows used in financing activities:    
Net proceeds from issuance of common stock related to registered direct offering (Note 3) 1,554
Principal payments on capital lease (38) (21)
Proceeds from long-term debt 2,114
Payments on long-term debt (359) (1,035)
Debt issuance costs on long-term debt (22) (5)
Net cash provided by financing activities 1,135 1,053
Net increase in cash and cash equivalents 420 273
Effect of exchange rate on cash 7 53
Cash and cash equivalents at beginning of year 5,686 3,223
Cash and cash equivalents at end of year 6,113 3,549
Supplemental disclosures of cash flow information: Cash paid during the period for:    
Interest 171 84
Income taxes 28 20
Supplemental disclosure of non-cash investing and financing activities:    
Site equipment transferred to fixed assets 222 317
Equipment acquired under capital lease $ 22