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Consolidated Statements of Cash Flows (Unaudited) - USD ($)
$ in Thousands
 6 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Operating activities:    
Net income $ 110 $ 118
Adjustments to reconcile net income to net cash provided by operating activities:    
Depreciation and amortization 478 545
Gain on sale of assets (1)
Stock-based compensation expense 55 92
Deferred tax benefit 29 (50)
Bad debt expense 15
Changes in operating assets and liabilities, net of effect from acquisitions:    
Accounts receivable 745 (442)
Short-term investments (3) (10)
Prepaid expenses and other assets 99 79
Accounts payable (243) 208
Accrued expenses and other current liabilities 66 337
Deferred revenue 409 488
Right of use assets and liabilities, net 3
Net cash provided by operating activities 1,748 1,379
Investing activities:    
Acquisition of Postelsia Holdings, Ltd. (300)
Proceeds from sale of assets 1
Purchases of property, equipment and software development costs (329) (252)
Proceeds from maturity of short-term investments 252
Net cash (used in) provided by investing activities (629) 1
Financing activities:    
Repayments of notes payable (4)
Proceeds from long term debt 1,030
Repayments of finance lease obligations (4) (6)
Proceeds from stock option exercise 3
Stock repurchase under Stock Buyback Plan (269) (252)
Net provided by (cash used) in financing activities 760 (262)
Net change in cash 1,879 1,118
Cash at beginning of period 2,638 1,482
Cash at end of period $ 4,517 $ 2,600