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Property, Plant & Equipment
6 Months Ended
Jun. 30, 2014
Property, Plant and Equipment [Abstract]  
Property, Plant & Equipment
Property, Plant & Equipment

Property, plant and equipment consisted of the following at June 30, 2014 and December 31, 2013:
 
June 30, 2014
 
December 31, 2013
Property, plant and equipment
$
116,886,000

 
$
109,407,000

Accumulated depreciation
(55,609,000
)
 
(52,929,000
)
Property, plant and equipment — net
$
61,277,000

 
$
56,478,000



Property, plant, and equipment are recorded at cost. Depreciation is provided on a straight-line method over the estimated useful lives of the assets. The carrying amount of long-lived assets is evaluated annually to determine if an adjustment to the depreciation period or to the unamortized balance is warranted. Additions in progress were $7,053,000 and $5,953,000 at June 30, 2014 and December 31, 2013, respectively. The Company capitalized $45,000 and $13,000 of interest expense for the six months ended June 30, 2014 and 2013, respectively. At June 30, 2014, and December 31, 2013, purchase commitments for capital expenditures in progress were $2,385,000 and $4,629,000, respectively.