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v3.19.1

Property, Plant and Equipment (Tables) | 12 Months Ended
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Mar. 31, 2019
Notes To Financial Statements [Abstract] |
Schedule of Change in Asset Retirement Obligation [Table Text Block] | The following table summarizes the activity in the liability for asset retirement obligations.
| Asset Retirement Obligations
Balance at March 31, 2017 | $ | 9,953 |
Liabilities incurred during the period | 89 |
Liabilities settled during the period | (352 | )
Accretion expense | 1,198 |
Foreign currency and other | 751 |
Balance at March 31, 2018 | $ | 11,639 |
Liabilities incurred during the period | 1,033 |
Accretion expense | 385 |
Foreign currency and other | (671 | )
Balance at March 31, 2019 | $ | 12,386 |
Schedule of Future Minimum Lease Payments for Capital Leases | Future minimum annual rentals payable under noncancelable operating lease agreements at March 31, 2019 were as follows:
|  | Operating Leases
2020 |  | $ | 24,008 |
2021 |  | 18,567 |
2022 |  | 13,917 |
2023 |  | 11,929 |
2024 and thereafter |  | 93,939 |
Total minimum lease payments |  | $ | 162,360 |
Property, Plant and Equipment | We generally depreciate or deplete property, plant, and equipment over the useful lives presented in the following table:
Asset Type |  | Useful Life (years)
Land improvements |  | 3-40 |
Buildings and leasehold improvements |  | 2-50 |
Machinery and equipment |  | 2-20 |
Information Systems |  | 2-20 |
Radioisotope (cobalt-60) |  | 20 |
Information related to the major categories of our depreciable assets is as follows:
March 31, |  | 2019 |  | 2018
Land and land improvements (1) |  | $ | 63,522 |  |  | $ | 55,417 |
Buildings and leasehold improvements |  | 480,359 |  |  | 467,063 |
Machinery and equipment |  | 656,956 |  |  | 631,623 |
Information systems |  | 169,711 |  |  | 151,360 |
Radioisotope |  | 483,080 |  |  | 458,440 |
Construction in progress (1) |  | 133,689 |  |  | 87,745 |
Total property, plant, and equipment |  | 1,987,317 |  |  | 1,851,648 |
Less: accumulated depreciation and depletion |  | (955,735 | ) |  | (841,124 | )
Property, plant, and equipment, net |  | $ | 1,031,582 |  |  | $ | 1,010,524 |
(1) Land is not depreciated. Construction in progress is not depreciated until placed in service.

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- Definition Tabular disclosure of physical assets used in the normal conduct of business and not intended for resale. Includes, but is not limited to, balances by class of assets, depreciation and depletion expense and method used, including composite depreciation, and accumulated deprecation. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(13)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 + Details
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- Definition Tabular disclosure of the changes in carrying amount of a liability for asset retirement obligations, for changes such as new obligations, changes in estimates of existing obligations, spending on existing obligations, property dispositions, and foreign currency translation. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 410 -SubTopic 30 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6393242&loc=d3e13201-110859 + Details
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- Definition Tabular disclosure of future minimum lease payments as of the date of the latest balance sheet presented, in aggregate and for each of the five years succeeding fiscal years, with separate deductions from the total for the amount representing executor costs, including any profit thereon, included in the minimum lease payments and for the amount of the imputed interest necessary to reduce the net minimum lease payments to present value. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=84164817&loc=d3e45280-112737 + Details
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