XML 28 R10.htm IDEA: XBRL DOCUMENT v3.19.1
PROPERTY, PLANT AND EQUIPMENT
12 Months Ended
Mar. 31, 2019
Property Plant And Equipment [Abstract]  
PROPERTY, PLANT AND EQUIPMENT

(B) Property, Plant, and Equipment

Cost by major category and Accumulated Depreciation are summarized as follows:

 

 

 

March 31,

 

 

 

2019

 

 

2018

 

 

 

(dollars in thousands)

 

Land and Quarries

 

$

379,337

 

 

$

368,776

 

Plants

 

 

2,006,870

 

 

 

1,925,980

 

Buildings, Machinery and Equipment

 

 

219,556

 

 

 

187,484

 

Construction in Progress

 

 

85,886

 

 

 

104,288

 

 

 

 

2,691,649

 

 

 

2,586,528

 

Accumulated Depreciation

 

 

(1,264,710

)

 

 

(991,229

)

 

 

$

1,426,939

 

 

$

1,595,299