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Summary of Significant Accounting Policies (Tables) | 12 Months Ended
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Feb. 29, 2020 | Feb. 28, 2019
Accounting Policies [Abstract] |  |
Schedule of Changes in Contract Liabilities |  | The following table shows the changes in contract liabilities for fiscal year 2020 and 2019 (in thousands):
|  | 2020 |  | 2019
Balance at beginning of period |  | $ | 56,928 |  |  | $ | 22,698 |
Contract liabilities added during the period |  | 14,292 |  |  | 54,331 |
Revenue recognized during the period |  | (52,802 | ) |  | (20,101 | )
Balance at end of period |  | $ | 18,418 |  |  | $ | 56,928 |
Disaggregation of Revenue | Disaggregated Revenue Revenue by segment and geography is disclosed in Note 12. In addition, the following table presents disaggregated revenue by customer industry (in thousands):
|  | 2020 |  | 2019 |  | 2018
Net sales: |  |  |  |  |  |
Industrial - oil and gas, construction, and general |  | $ | 605,236 |  |  | $ | 526,465 |  |  | $ | 461,945 |
Transmission and distribution |  | 254,836 |  |  | 212,433 |  |  | 194,503 |
Power generation |  | 201,745 |  |  | 188,189 |  |  | 153,982 |
Total net sales |  | $ | 1,061,817 |  |  | $ | 927,087 |  |  | $ | 810,430 |
Property, Plant and Equipment | Depreciation is computed using the straight-line method over the estimated useful lives of the related assets as follows:
Buildings and structures | 10-25 years
Machinery and equipment | 3-15 years
Furniture and fixtures | 3-15 years
Automotive equipment | 3 years
Computers and software | 3-7 years
Property, Plant and Equipment Property, plant and equipment consisted of the following as of February 29, 2020 and February 28, 2019 (in thousands):
|  | 2020 |  | 2019
Land |  | $ | 21,826 |  |  | $ | 21,677 |
Building and structures |  | 162,851 |  |  | 156,447 |
Machinery and equipment |  | 252,726 |  |  | 245,588 |
Furniture, fixtures, software and computers |  | 28,938 |  |  | 27,075 |
Automotive equipment |  | 4,394 |  |  | 3,766 |
Construction in progress |  | 16,466 |  |  | 13,065 |
|  | 487,201 |  |  | 467,618 |
Less accumulated depreciation |  | (274,097 | ) |  | (257,391 | )
Net property, plant, and equipment |  | $ | 213,104 |  |  | $ | 210,227 |
Schedule of Warranty Reserve | The following table shows the changes in the Company’s accrued warranties for fiscal year 2020, 2019 and 2018 (in thousands):
| 2020 |  | 2019 |  | 2018
Balance at beginning of period | $ | 1,751 |  |  | $ | 2,013 |  |  | $ | 2,098 |
Warranty costs incurred | (2,118 | ) |  | (2,195 | ) |  | (2,225 | )
Additions charged to income | 4,069 |  |  | 1,933 |  |  | 2,140 |
Balance at end of period | $ | 3,702 |  |  | $ | 1,751 |  |  | $ | 2,013 |
Schedule of New Accounting Pronouncements and Changes in Accounting Principles |  |
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] | The components of accumulated other comprehensive loss consisted of the following as of February 29, 2020 and February 28, 2019 (in thousands):
|  | 2020 |  | 2019
Foreign currency translation adjustments |  | $ | (30,949 | ) |  | $ | (28,856 | )
Interest rate swap |  | 50 |  |  | 104 |
Accumulated other comprehensive loss |  | $ | (30,899 | ) |  | $ | (28,752 | )

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- Definition Tabular disclosure of the changes in the guarantor's aggregate product warranty liability, including the beginning balance of the aggregate product warranty liability, the aggregate reductions in that liability for payments made (in cash or in kind) under the warranty, the aggregate changes in the liability for accruals related to product warranties issued during the reporting period, the aggregate changes in the liability for accruals related to preexisting warranties (including adjustments related to changes in estimates), and the ending balance of the aggregate product warranty liability. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 460 -SubTopic 10 -Section 50 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=68068213&loc=d3e12565-110249 + Details
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