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Property, Plant & Equipment
6 Months Ended
Jun. 30, 2012
Property, Plant and Equipment [Line Items]  
Property, Plant & Equipment
Property, Plant & Equipment

Property, plant and equipment consisted of the following at June 30, 2012 and December 31, 2011:
 
June 30, 2012
 
December 31, 2011
Property, plant and equipment
$
98,138,000

 
$
93,236,000

Accumulated depreciation
(46,245,000
)
 
(43,892,000
)
Property, plant and equipment — net
$
51,893,000

 
$
49,344,000



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. Capital expenditures in progress were $9,055,000 and $7,271,000 at June 30, 2012 and December 31, 2011, respectively. The Company capitalized $139,000 of interest expense for the six months ended June 30, 2012. At June 30, 2012 and December 31, 2011, purchase commitments for capital expenditures in progress were $1,954,000 and $4,356,000, respectively. These commitments are primarily related to the Company's Matamoros, Mexico facility expansion project.