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PROPERTY, PLANT AND EQUIPMENT | 12 Months Ended
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Dec. 31, 2015
PROPERTY, PLANT AND EQUIPMENT [Abstract] |
PROPERTY, PLANT AND EQUIPMENT |
5. | PROPERTY, PLANT AND EQUIPMENT
Property, plant and equipment, net consist of the following (in millions):
|  | December 31, |
|  | 2015 |  |  | 2014 |
Land and buildings |  | $ | 17.7 |  |  | $ | 18.6 |
Furniture and fixtures, office, computer and other equipment and software |  |  | 108.7 |  |  |  | 127.6 |
Leasehold improvements |  |  | 21.8 |  |  |  | 26.8 |
|  |  | 148.2 |  |  |  | 173.0 |
Less accumulated depreciation and amortization |  |  | 109.9 |  |  |  | 131.8 |
Property, plant and equipment, net |  | $ | 38.3 |  |  | $ | 41.2 |
Included in property, plant and equipment are assets under capital leases, as follows (in thousands):
|  | 2015 |  |  | 2014 |
Office, computer and other equipment |  | $ | 17.5 |  |  | $ | 17.7 |
Less: Accumulated amortization |  |  | 16.3 |  |  |  | 14.6 |
|  | $ | 1.2 |  |  | $ | 3.1 |
Depreciation charged to operations for property, plant and equipment including capital leases in 2015, 2014, and 2013 was $11.1 million, $15.4 million and $17.4 million, respectively. NATG operations accounted for $3.1 million, $8.5 million and $11.9 million, of these amounts in 2015, 2014 and 2013, respectively.

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- Definition The entire disclosure for long-lived, physical assets used in the normal conduct of business and not intended for resale. Includes, but is not limited to, accounting policies and methodology, roll forwards, depreciation, depletion and amortization expense, including composite depreciation, accumulated depreciation, depletion and amortization expense, useful lives and method used, income statement disclosures, assets held for sale and public utility disclosures. + 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 210.5-02.13-14) -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 205 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=51717284&loc=d3e1361-107760 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=51719941&loc=d3e2921-110230 Reference 4: http://www.xbrl.org/2003/role/presentationRef -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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