v2.4.0.6

Schedule II - Valuation And Qualifying Accounts | 12 Months Ended
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Jan. 31, 2013
Schedule of Valuation and Qualifying Accounts Disclosure [Text Block] | COMARCO, INC. AND SUBSIDIARY SCHEDULE II—VALUATION AND QUALIFYING ACCOUNTS Years Ended January 31, 2013 and 2012 (In thousands)
|  | Balance at Beginning of Year |  |  | Charged to Cost and Expense (Recovery) |  |  | Deductions |  |  | Other Changes Add (Deduct) |  |  | Balance at End of Year |
Allowance for doubtful accounts and provision for unbilled receivables (deducted from accounts receivable): |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Year ended January 31, 2013 |  | $ | 87 |  |  | $ | (38 | ) |  | $ | (25 | ) |  | $ | — |  |  | $ | 24 |
Year ended January 31, 2012 |  | $ | 119 |  |  | $ | (29 | ) |  | $ | (3 | ) |  | $ | — |  |  | $ | 87 |
Allowance for deferred tax assets: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Year ended January 31, 2013 |  | $ | 17,130 |  |  | $ | — |  |  | $ | — |  |  | $ | 619 |  |  | $ | 17,749 |
Year ended January 31, 2012 |  | $ | 15,121 |  |  | $ | — |  |  | $ | — |  |  | $ | 2,009 |  |  | $ | 17,130 |
Reserve for obsolete inventory: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Year ended January 31, 2013 |  | $ | 1,792 |  |  | $ | — |  |  | $ | — |  |  | $ | (1,161 | ) |  | $ | 631 |
Year ended January 31, 2012 |  | $ | 1,581 |  |  | $ | 357 |  |  | $ | (146 | ) |  | $ | — |  |  | $ | 1,792 |

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- Definition The entire disclosure for any allowance and reserve accounts (their beginning and ending balances, as well as a reconciliation by type of activity during the period). Alternatively, disclosure of the required information may be within the footnotes to the financial statements or a supplemental schedule to the financial statements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 09 -Article 12 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6881521&loc=d3e24092-122690 + Details
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Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration