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v3.8.0.1

Consolidated Statements of Cash Flows - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Cash flows from operating activities: |  |  |
Net income (loss) from operations | $ (22,399) | $ 10,514 | $ 42,151
Adjustments to reconcile net income (loss) from operations to net cash provided by operations: |  |  |
Depreciation and amortization | 10,601 | 10,777 | 6,302
Loss on disposal of assets | 185 | 14 | 0
Deferred tax expense (benefit) | 13,053 | (4,936) | (691)
Stock-based compensation | 3,466 | 2,766 | 3,835
Changes in assets and liabilities, net of effect of acquisitions: |  |  |
Accounts receivable, net | (8,428) | (8,106) | 2,860
Inventories, net | 5,380 | 3,198 | 13,257
Foreign sales tax receivable | (692) | 336 | 49
Other current assets | (1,574) | (410) | (358)
Accounts payable | (1,013) | 163 | (6,645)
Income taxes payable | 11,926 | (582) | 2,946
Accrued expenses | 2,514 | 4 | 1,351
Current deferred compensation | (77) | 226 | 697
Deferred revenue | 3,704 | 14,396 | 2,996
Other long-term liabilities | 981 | 55 | 42
Net cash provided by operating activities | 17,627 | 28,415 | 68,792
Cash flows from investing activities |  |  |
Purchase of short term investments | (178,658) | (184,690) | (109,747)
Maturities of short term investments | 195,000 | 134,775 | 129,725
Purchase of eSignLive, net of cash acquired |  |  | (74,486)
Additions to property and equipment | (3,088) | (2,043) | (1,362)
Additions to intangible assets | (107) | (144) | (89)
Other | (349) | (4,394) | 3
Net cash provided by (used in) investing activities | 12,798 | (56,496) | (55,956)
Cash flows from financing activities of continuing operations: |  |  |
Repayment of debt |  |  | (5,925)
Tax payments for restricted stock issuances | (640) | (1,051) | (837)
Tax benefit of stock-based compensation |  |  | 318
Net cash used in financing activities | (640) | (1,051) | (6,444)
Effect of exchange rate changes on cash | (469) | (45) | (311)
Net increase (decrease) in cash | 29,316 | (29,177) | 6,081
Cash and equivalents, beginning of period | 49,345 | 78,522 | 72,441
Cash and equivalents, end of period | 78,661 | 49,345 | 78,522
Supplemental cash flow disclosures: |  |  |
Cash paid for income taxes | 6,427 | 5,982 | 6,781
Cash paid for interest | $ 0 | $ 0 | $ 0

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- Definition The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock or unit options, amortization of restricted stock or units, and adjustment for officers' compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585 + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_SupplementalCashFlowInformationAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The increase (decrease) during the reporting period in value-added tax receivables, which represents the amount due from tax authorities for refunds of overpayments or recoveries of foreign value-added taxes paid. + References No definition available. + Details
Name: | vdsi_IncreaseDecreaseInValueAddedTaxReceivable
Namespace Prefix: | vdsi_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration