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Inventory | 12 Months Ended
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Dec. 31, 2015
Inventory Disclosure [Abstract] |
Inventory | 4. Inventory Inventory consisted of the following amounts (in thousands):
| December 31,
| 2015 |  | 2014
Parts and supplies | $ | 109,634 |  |  | $ | 120,646 |
Work in progress | 19,777 |  |  | 25,140 |
Inventory | $ | 129,411 |  |  | $ | 145,786 |
During the years ended December 31, 2015, 2014 and 2013, we recorded $4.3 million, $8.9 million and $3.9 million, respectively, in inventory write-downs and reserves for inventory which was obsolete, excess or carried at a price above market value. As of December 31, 2015 and 2014, we had inventory reserves of $9.8 million and $11.5 million, respectively.

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- Definition The entire disclosure for inventory. Includes, but is not limited to, the basis of stating inventory, the method of determining inventory cost, the classes of inventory, and the nature of the cost elements included in inventory. + 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 + Details
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