XML 40 R28.htm IDEA: XBRL DOCUMENT v3.5.0.2
Business Segments (Details)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2016
USD ($)
Sep. 30, 2015
USD ($)
Sep. 30, 2016
USD ($)
segment
Sep. 30, 2015
USD ($)
Business segments        
Number of business segments | segment     2  
Revenues $ 38,650 $ 37,029 $ 105,116 $ 99,543
Depreciation, depletion and amortization 4,017 3,967 11,855 11,736
Gross profit 10,569 10,367 25,658 23,244
Capital expenditures 4,330 1,770 12,230 8,080
Lime and limestone operations        
Business segments        
Revenues 38,096 36,452 103,626 97,593
Depreciation, depletion and amortization 3,827 3,786 11,279 11,175
Gross profit 10,503 10,320 25,677 22,826
Capital expenditures 4,320 1,766 12,216 8,069
Natural gas interests        
Business segments        
Revenues 554 577 1,490 1,950
Depreciation, depletion and amortization 190 181 576 561
Gross profit 66 47 (19) 418
Capital expenditures $ 10 $ 4 $ 14 $ 11