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CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
OPERATING ACTIVITIES: |  |  |
Net income | $ 11,145 | $ 6,691 | $ 1,626
Adjustments to reconcile net income to net cash provided by (used in) operating activities: |  |  |
Depreciation and amortization | 3,434 | 3,182 | 1,942
Bad debt expense | 80 | 10 | 10
Interest amortization of deferred financing costs | 104 | 100 | 99
Stock-based compensation expense | 936 | 470 | 381
Deferred income taxes, net | 1,322 | 171 | (234)
Impairment of goodwill |  | 9,738 |
Revaluation of contingent consideration liability | (6,069) | (11,056) |
Operating lease assets and liabilities, net | 100 |  |
Loss on disposition of fixed assets |  | 7 | 4
Long-term accrued income taxes | (19) | 136 | 68
Working capital items: |  |  |
Accounts receivable and unbilled receivables | 5,648 | (7,428) | (3,322)
Prepaid and other current assets | (386) | 283 | (618)
Accounts payable | (100) | (901) | 1,685
Accrued payroll and related costs | 174 | (1,241) | 472
Other accrued liabilities | (264) | (461) | 1,000
Deferred revenue | (21) | (172) | 234
Net cash flows provided by (used in) operating activities | 16,084 | (471) | 3,347
INVESTING ACTIVITIES: |  |  |
Acquisition of InfoTrellis, Inc. (net of cash acquired and issuance of contingent consideration) |  |  | (34,799)
Recovery of (payments for) non-current deposits | 135 | (285) | (8)
Capital expenditures | (1,014) | (771) | (1,127)
Net cash flows (used in) investing activities | (879) | (1,056) | (35,934)
FINANCING ACTIVITIES: |  |  |
Borrowing (repayments) on revolving credit facility, net | (3,976) | 4,526 | 5,364
Borrowing on term loan facility |  |  | 30,500
(Repayments) on term loan facility | (9,575) | (4,003) | (7,253)
Proceeds from the issuance of common stock | 168 |  | 6,000
Payment of deferred financing costs |  | (71) | (435)
Purchase of treasury stock | (13) | (20) | (20)
Proceeds from the exercise of stock options | 7 | 118 | 70
Net cash flows provided by (used in) financing activities | (13,389) | 550 | 34,226
Effect of exchange rate changes on cash and cash equivalents | (129) | (207) | 10
Net change in cash and cash equivalents | 1,687 | (1,184) | 1,649
Cash and cash equivalents, beginning of period | 1,294 | 2,478 | 829
Cash and cash equivalents, end of period | 2,981 | 1,294 | 2,478
SUPPLEMENTAL DISCLOSURE: |  |  |
Cash payments for interest expense | 1,780 | 2,060 | 925
Cash payments for income taxes | $ 2,634 | $ 2,031 | 1,506
Capital expenditures in accounts payable |  |  | $ 312

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- Definition The cash inflow during the period from additional borrowings in aggregate debt. Includes proceeds from short-term and long-term debt. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3255-108585 + Details
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- Definition The cash outflow during the period from the repayment of aggregate short-term and long-term debt. Excludes payment of capital lease obligations. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3291-108585 + Details
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