XML 32 R21.htm IDEA: XBRL DOCUMENT v3.4.0.3
Segment Reporting (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2016
Mar. 31, 2015
Dec. 31, 2015
Activities by Segment [Abstract]      
Revenues $ 250,531 $ 555,573  
Depreciation depletion and amortization 5,115 6,088  
Segment Operating Earnings [Abstract]      
General and administrative (2,200) (3,331)  
Operating earnings 2,339 4,917  
Interest income 103 78  
Interest expense 0 (4)  
Earnings before income taxes and equity investments 2,442 4,991  
Identifiable Assets By Segment [Abstract]      
Assets 237,915   $ 243,215
Reportable Segments [Member]      
Activities by Segment [Abstract]      
Revenues 250,531 555,573  
Segment operating earnings 4,539 8,248  
Depreciation depletion and amortization 5,115 6,088  
Property and equipment additions 4,210 3,665  
Segment Operating Earnings [Abstract]      
Segment operating earnings 4,539 8,248  
General and administrative (2,200) (3,331)  
Operating earnings 2,339 4,917  
Interest income 103 78  
Interest expense 0 (4)  
Earnings before income taxes and equity investments 2,442 4,991  
Identifiable Assets By Segment [Abstract]      
Assets 237,861   243,215
Reportable Segments [Member] | Marketing [Member]      
Activities by Segment [Abstract]      
Revenues 236,394 537,748  
Segment operating earnings 4,648 8,848  
Depreciation depletion and amortization 2,689 2,767  
Property and equipment additions 263 1,850  
Segment Operating Earnings [Abstract]      
Segment operating earnings 4,648 8,848  
Identifiable Assets By Segment [Abstract]      
Assets 101,067   96,723
Reportable Segments [Member] | Transportation [Member]      
Activities by Segment [Abstract]      
Revenues 13,347 16,465  
Segment operating earnings 173 1,125  
Depreciation depletion and amortization 1,985 1,899  
Property and equipment additions 3,817 166  
Segment Operating Earnings [Abstract]      
Segment operating earnings 173 1,125  
Identifiable Assets By Segment [Abstract]      
Assets 35,020   35,010
Reportable Segments [Member] | Oil and Gas [Member]      
Activities by Segment [Abstract]      
Revenues 790 1,360  
Segment operating earnings (282) (1,725)  
Depreciation depletion and amortization 441 1,422  
Property and equipment additions 130 1,649  
Segment Operating Earnings [Abstract]      
Segment operating earnings (282) $ (1,725)  
Identifiable Assets By Segment [Abstract]      
Assets 8,243   8,930
Reportable Segments [Member] | Other [Member]      
Identifiable Assets By Segment [Abstract]      
Assets $ 93,531   $ 102,552