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Other Financial Statement Information | 3 Months Ended
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Mar. 31, 2013
OTHER FINANCIAL STATEMENT INFORMATION | NOTE 2: OTHER FINANCIAL STATEMENT INFORMATION The following tables provide details of selected financial statement items: ALLOWANCE FOR DOUBTFUL RECEIVABLES
| Three Months Ended | Year Ended
| March 31, 2013 | December 31, 2012
Balance at beginning of year | $ 49 | $ 50
Provision for doubtful receivables | 15 | -
Write-offs | - | (1 )
Balance at end of year | $ 64 | $ 49
INVENTORIES
| March 31, | December 31,
| 2013 | 2012
Finished goods | $ 61 | $ 103
Work-in-process | 46 | 55
Total inventories | $ 107 | $ 158
PROPERTY AND EQUIPMENT
| March 31, | December 31,
| 2013 | 2012
Leased equipment | $ 89 | $ 89
Equipment | 1,202 | 1,192
Leasehold improvements | 381 | 381
Demonstration equipment | 5 | 5
Purchased software | 368 | 373
Furniture and fixtures | 570 | 572
Total property and equipment | $ 2,615 | $ 2,612
Less: accumulated depreciation and amortization | (2,243 ) | (2,197 )
Net property and equipment | $ 372 | $ 415
OTHER ASSETS Other assets consist of long-term deposits on operating leases. DEFERRED REVENUE
| March 31, | December 31,
| 2013 | 2012
Deferred software maintenance | $ 467 | $ 480
Customer deposits and deferred project revenue | 201 | 116
Total deferred revenue | $ 668 | $ 596
ACCRUED LIABILITIES
| March 31, | December 31,
| 2013 | 2012
Compensation | $ 349 | $ 254
Accrued rent | 201 | 208
Sales tax and other | 57 | 65
Total accrued liabilities | $ 607 | $ 527
See Note 4 for additional information on accrued remaining lease obligations. SUPPLEMENTAL CASH FLOW INFORMATION
| Three Months Ended
| March 31,
| 2013 | 2012
Cash paid for: |  |
Interest | $ 7 | $ 2

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- Definition Other financial statement information. + References No definition available. + Details
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