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Consolidated Statements of Cash Flows - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018
Cash flows from operating activities: |  |  |
Net income (loss) |  | $ 2,191 | $ (1,741)
Less: loss on discontinued operations, net of taxes of $0 (Note 9) |  | (541) | (667)
Income (loss) from continuing operations |  | 2,732 | (1,074)
Adjustments to reconcile net income (loss) from continuing operations to cash provided by operating activities: |  |  |
Depreciation and amortization |  | 1,342 | 1,455
Interest on finance lease with purchase option |  | 3 |
Amortization of debt issuance/debt discount costs |  | 208 | 35
Deferred tax expense (benefit) |  | 4 | (1,108)
Provision for bad debt reserves |  | 386 | 66
Loss (gain) on disposal of property and equipment |  | 3 | (46)
Gain on exchange offer of Series B Preferred Stock of subsidiary (Note 8) |  |  | (1,659)
Issuance of common stock for services |  | 241 | 249
Stock-based compensation |  | 179 | 198
Changes in operating assets and liabilities of continuing operations: |  |  |
Accounts receivable |  | (5,829) | 139
Unbilled receivables |  | (4,879) | 1,626
Prepaid expenses, inventories and other assets |  | 923 | 1,932
Accounts payable, accrued expenses and unearned revenue |  | 664 | 765
Cash (used in) provided by continuing operations |  | (4,023) | 2,578
Cash used in discontinued operations |  | (660) | (618)
Cash (used in) provided by operating activities |  | (4,683) | 1,960
Cash flows from investing activities: |  |  |
Purchases of property and equipment | [1] | (1,535) | (1,432)
Proceeds from sale of property and equipment |  | 2 | 47
Cash used in investing activities of continuing operations |  | (1,533) | (1,385)
Cash provided by investing activities of discontinued operations |  | 121 | 67
Cash used in investing activities |  | (1,412) | (1,318)
Cash flows from financing activities: |  |  |
Borrowing on revolving credit |  | 59,333 | 54,714
Repayments of revolving credit borrowings |  | (59,651) | (54,075)
Proceeds from issuance of long-term debt |  | 2,500 |
Proceeds from finance leases |  | 405 |
Principal repayment of finance lease liabilities |  | (272) | (36)
Principal repayments of long term debt |  | (1,344) | (1,219)
Payment of debt issuance costs |  | (112) |
Proceeds from issuance of common stock upon exercise of options |  | 133 | 36
Cash provided by (used in) financing activities of continuing operations |  | 992 | (580)
Effect of exchange rate changes on cash |  | 19 | (20)
(Decrease) increase in cash and finite risk sinking fund (restricted cash) (Note 2) |  | (5,084) | 42
Cash and finite risk sinking fund (restricted cash) at beginning of period (Note 2) |  | 16,781 | 16,739
Cash and finite risk sinking fund (restricted cash) at end of period (Note 2) |  | 11,697 | 16,781
Supplemental disclosure: |  |  |
Interest paid |  | 422 | 248
Income taxes paid |  | 245 | 160
Non-cash investing and financing activities: |  |  |
Purchase of equipment through finance lease obligation |  | 393 | 545
Common stock issued in exchange offer of Series B Preferred Stock of subsidiary (Note 8) |  |  | 648
Issuance of Common Stock with debt |  | 263 |
Issuance of Warrant with debt |  | $ 93 |
[1] | Net of financed amount of $393,000 and $545,000 for the year ended December 31, 2019 and 2018, respectively.

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- Definition Amount of cash inflow (outflow) from investing activities, including discontinued operations. Investing activity cash flows include making and collecting loans and acquiring and disposing of debt or equity instruments and property, plant, and equipment and other productive assets. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 24 -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3521-108585 + Details
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- Definition Amount of cash inflow (outflow) of investing activities, excluding discontinued operations. Investing activity cash flows include making and collecting loans and acquiring and disposing of debt or equity instruments and property, plant, and equipment and other productive assets. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 24 -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3521-108585 + Details
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- Definition Amount of cash inflow (outflow) from operating activities, including discontinued operations. Operating activity cash flows include transactions, adjustments, and changes in value not defined as investing or financing activities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 25 -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3536-108585 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 24 -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3521-108585 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3602-108585 + Details
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- Definition Amount of cash inflow (outflow) from operating activities, excluding discontinued operations. Operating activity cash flows include transactions, adjustments, and changes in value not defined as investing or financing activities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 24 -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3521-108585 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 25 -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3536-108585 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3602-108585 + Details
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- Definition The cash outflow paid to third parties in connection with debt origination, which will be amortized over the remaining maturity period of the associated long-term debt. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3291-108585 + Details
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