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Property, Plant & Equipment (Details) - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Property, Plant & Equipment: |  |  |
Property, plant and equipment | $ 137,996,000 | $ 119,933,000 |
Accumulated depreciation | (63,893,000) | (57,938,000) |
Property, plant and equipment — net | 74,103,000 | 61,995,000 |
Commitments for capital expenditures in progress recorded on balance sheet | 1,102,000 | 1,682,000 |
Capital Expenditures Incurred but Not yet Paid | 464,000 | 557,000 | $ 709,000
Capitalized interest expense | 2,000 | 80,000 |
Land and land improvements |  |  |
Property, Plant & Equipment: |  |  |
Property, plant and equipment | 5,958,000 | 5,098,000 |
Buildings |  |  |
Property, Plant & Equipment: |  |  |
Property, plant and equipment | 41,417,000 | 37,143,000 |
Machinery and equipment |  |  |
Property, Plant & Equipment: |  |  |
Property, plant and equipment | 87,482,000 | 75,905,000 |
Tools, dies and patterns |  |  |
Property, Plant & Equipment: |  |  |
Property, plant and equipment | 808,000 | 808,000 |
Additions in progress |  |  |
Property, Plant & Equipment: |  |  |
Property, plant and equipment | $ 2,331,000 | $ 979,000 |

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