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Consolidated Statements of Income (USD $) In Thousands, except Per Share data, unless otherwise specified | 12 Months Ended
--- | ---
Jan. 31, 2013 | Jan. 31, 2012 | Jan. 31, 2011
Revenues: |  |  |
Equipment leasing | $ 54,592 | $ 70,137 | $ 36,825
Lease pool equipment sales | 11,412 | 6,503 | 2,470
Seamap equipment sales | 31,169 | 28,406 | 21,345
Other equipment sales | 7,512 | 7,788 | 10,723
Total revenues | 104,685 | 112,834 | 71,363
Cost of sales: |  |  |
Direct costs - equipment leasing | 7,963 | 8,059 | 3,739
Direct costs - lease pool depreciation | 33,405 | 27,400 | 21,354
Cost of lease pool equipment sales | 6,043 | 1,580 | 1,130
Cost of Seamap and other equipment sales | 19,861 | 18,043 | 18,498
Total cost of sales | 67,272 | 55,082 | 44,721
Gross profit | 37,413 | 57,752 | 26,642
Operating expenses: |  |  |
General and administrative | 22,539 | 21,354 | 16,755
(Recovery of) provision for doubtful accounts | (428) | 615 | 1,795
Depreciation and amortization | 1,400 | 1,239 | 1,171
Total operating expenses | 23,511 | 23,208 | 19,721
Operating income | 13,902 | 34,544 | 6,921
Other income (expense): |  |  |
Gain from bargain purchase in business combination |  |  | 1,304
Interest income | 544 | 344 | 283
Interest expense | (533) | (740) | (756)
Other, net | (389) | 182 | (958)
Total other expense | (378) | (214) | (127)
Income before income taxes | 13,524 | 34,330 | 6,794
Benefit (provision) for income taxes | 3,527 | (10,009) | (2,065)
Net income | $ 17,051 | $ 24,321 | $ 4,729
Net income per common share: |  |  |
Basic | $ 1.34 | $ 2.13 | $ 0.48
Diluted | $ 1.29 | $ 2.02 | $ 0.46
Shares used in computing income per common share: |  |  |
Basic | 12,715 | 11,432 | 9,870
Diluted | 13,242 | 12,069 | 10,181

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