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Schedule II - Valuation and Qualifying Accounts | 12 Months Ended
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Jan. 31, 2018
Valuation and Qualifying Accounts [Abstract] |
Schedule II - Valuation and Qualifying Accounts | SCHEDULE II MITCHAM INDUSTRIES, INC. VALUATION AND QUALIFYING ACCOUNTS (in thousands)
Col. A | Col. B |  | Col. C(1) |  | Col. C(2) |  | Col. D |  | Col. E
Description | Balance at Beginning of Period |  | Charged to Costs and Expenses |  | Charged to Other Accounts |  | Deductions Describe |  | Balance at End of Period
Allowance for doubtful accounts |  |  |  |  |  |
January 31, 2018 | $ | 5,904 |  |  | 1,027 |  |  | (23 | ) | (a) | (741 | ) | (b) | $ | 6,167 |
January 31, 2017 | $ | 5,821 |  |  | 737 |  |  | (31 | ) | (a) | (623 | ) | (b) | $ | 5,904 |
January 31, 2016 | $ | 6,339 |  |  | 2,069 |  |  | 404 |  | (a) | (2,991 | ) | (b) | $ | 5,821 |
Allowance for obsolete equipment and inventory |  |  |  |  |  |  |
January 31, 2018 | $ | 952 |  |  | 989 |  |  | 20 |  | (a) | (286 | ) | (c) | $ | 1,675 |
January 31, 2017 | $ | 900 |  |  | 116 |  |  | (41 | ) | (a) | (23 | ) | (c) | $ | 952 |
January 31, 2016 | $ | 750 |  |  | 208 |  |  | (58 | ) | (a) | — |  | (c) | $ | 900 |
(a) | Represents translation differences.
(b) | Represents recoveries and uncollectible accounts written off.
(c) | Represents sale or scrap of inventory and obsolete equipment.

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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 FASB -Name Accounting Standards Codification -Topic 235 -URI http://asc.fasb.org/topic&trid=2122369 + Details
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- References No definition available. + Details
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