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Inventory | 12 Months Ended
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Mar. 31, 2016
Inventory [Abstract] |
Inventory | 7. Inventory Non-core inventory, inventory unreturned, long-term core inventory, and long-term core inventory deposits are as follows at March 31:
|  | 2016 |  |  | 2015 |
Non-core inventory |  |  |  |  |  |
Raw materials |  | $ | 17,394,000 |  |  | $ | 18,836,000 |
Work-in-process |  |  | 135,000 |  |  |  | 255,000 |
Finished goods |  |  | 42,982,000 |  |  |  | 39,828,000 |
|  |  | 60,511,000 |  |  |  | 58,919,000 |
Less allowance for excess and obsolete inventory |  |  | (2,451,000 | ) |  |  | (2,090,000 | )
Total |  | $ | 58,060,000 |  |  | $ | 56,829,000 |
Inventory unreturned |  | $ | 10,520,000 |  |  | $ | 7,833,000 |
Long-term core inventory |  |  |  |  |  |  |  |
Used cores held at the Company's facilities |  | $ | 34,405,000 |  |  | $ | 27,417,000 |
Used cores expected to be returned by customers |  |  | 10,781,000 |  |  |  | 9,799,000 |
Remanufactured cores held in finished goods |  |  | 24,489,000 |  |  |  | 21,557,000 |
Remanufactured cores held at customers' locations (1) |  |  | 172,600,000 |  |  |  | 130,762,000 |
|  |  | 242,275,000 |  |  |  | 189,535,000 |
Less allowance for excess and obsolete inventory |  |  | (1,175,000 | ) |  |  | (585,000 | )
Total |  | $ | 241,100,000 |  |  | $ | 188,950,000 |
Long-term core inventory deposits (1).. |  | $ | 5,569,000 |  |  | $ | 31,571,000 |
(1) | During the year ended March 31, 2016, the Company completed the core buy-back program with one of its largest customers. As a result of the completion of this buy-back program and related long-term core inventory reconciliations, $25,805,000 from long-term core inventory deposits was transferred to Remanufactured Cores held at customers’ locations within long-term core inventory. At March 31, 2015, $26,002,000 of remanufactured cores in connection with this core buy-back program was included in long-term core inventory deposits.

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- Definition The entire disclosure for inventory. This may include, but is not limited to, the basis of stating inventory, the method of determining inventory cost, the major classes of inventory, and the nature of the cost elements included in inventory. If inventory is stated above cost, accrued net losses on firm purchase commitments for inventory and losses resulting from valuing inventory at the lower-of-cost-or-market may also be included. For LIFO inventory, may disclose the amount and basis for determining the excess of replacement or current cost over stated LIFO value and the effects of a LIFO quantities liquidation that impacts net income. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.6) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6361739&loc=d3e7789-107766 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 6 -Subparagraph a, b, c -Article 5 + Details
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