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Consolidated Statements of Cash Flows (Unaudited) - USD ($)
$ in Thousands
 9 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Operating activities:    
Net income $ 840 $ 577
Adjustments to reconcile net income to net cash provided by operating activities:    
Depreciation and amortization 736 802
Gain on sale of assets (19) (1)
Stock-based compensation expense 80 129
Deferred tax benefit 28 (73)
Bad debt expense 49 27
Changes in operating assets and liabilities, net of effect from acquisitions:    
Accounts receivable (57) (794)
Short-term investments (4) (11)
Prepaid expenses and other assets (267) 233
Accounts payable (70) 481
Accrued expenses and other current liabilities 505 641
Deferred revenue 351 297
Right of use assets and liabilities, net 4 27
Net cash provided by operating activities 2,176 2,335
Investing activities:    
Acquisition of Postelsia Holdings, Ltd. (300)
Proceeds from sale of assets 34 1
Purchases of property, equipment and software development costs (416) (268)
Proceeds from maturity of short-term investments 253
Net cash used in by investing activities (682) (14)
Financing activities:    
Repayments of notes payable (7)
Proceeds from long term debt 1,030
Repayments of finance lease obligations (6) (5)
Proceeds from stock option exercise 3
Stock repurchase under Stock Buyback Plan (534) (371)
Net provided by (cash used) in financing activities 493 (383)
Net change in cash 1,987 1,938
Cash at beginning of period 2,638 1,482
Cash at end of period $ 4,625 $ 3,420