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CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2016 | Dec. 31, 2015
Cash flows from operating activities: |  |
Net income (loss) | $ 69 | $ (2,934)
Adjustments to reconcile net loss to net cash provided by in operating activities: |  |
Depreciation expense | 395 | 367
Write-off rental units | 30 | 0
Loss on the disposal of property and equipment | 22 |
Provision for losses on accounts receivable | 1,433 | 1,040
Amortization of intangible assets | 40 | 57
Provision for obsolete inventory | 0 | 28
Employee stock-based compensation and warrant expense | 200 | 130
Changes in operating assets and liabilities: |  |
Accounts receivable | (2,018) | (277)
Inventory | 198 | 1,602
Prepaid expenses | (14) | 223
Income tax receivable | 0 | 268
Deposits and other current assets | 0 | (53)
Deferred revenue | 845 | (23)
Accounts payable | 402 | (67)
Accrued liabilities | 167 | (20)
Net cash provided by operating activities | 1,769 | 341
Cash flows from investing activities: |  |
Net disposals of equipment | 0 | 9
Change in inventory used for rental | 0 | 99
Purchases used for rental | (226) |
Net cash (used in) provided by investing activities | (226) | 108
Cash flows from financing activities: |  |
Net repayments on line of credit | (1,232) | (440)
Payments on notes payable and capital lease obligations | (72) | (64)
Net cash used in financing activities | (1,304) | (504)
Net increase (decrease) in cash | 239 | (55)
Cash at the beginning of the period | 8 | 63
Cash at the end of the period | 247 | 8
Supplemental cash flow information: |  |
Interest paid | $ 351 | $ 503

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- Definition The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16225-109274 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3602-108585 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
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