v3.3.0.814
SEGMENT INFORMATION (Details)
$ in Thousands
 3 Months Ended 6 Months Ended 12 Months Ended
Sep. 30, 2015
USD ($)
Sep. 30, 2014
USD ($)
Sep. 30, 2015
USD ($)
Segments
Regions
Sep. 30, 2014
USD ($)
Mar. 31, 2015
USD ($)
Business_Units
Segment Reporting Information [Line Items]          
Number of operating segments | Segments     1    
Number of reportable segments     4   5
Total consolidated gross revenue $ 446,911 $ 475,636 $ 913,907 $ 948,174  
Total earnings from unconsolidated affiliates, net of losses - equity method investments (15,360) (2,904) (9,064) 1,377  
Gain (loss) on disposal of assets (14,007) 127 (21,702) 737  
Total consolidated operating income (loss) (29,833) 44,064 (24,999) 109,256  
Total depreciation and amortization 37,387 28,205 74,533 53,539  
Total identifiable assets 3,201,052   3,201,052   $ 3,230,720
Total investments in unconsolidated affiliates - equity method 190,064   190,064   210,090
Accelerated depreciation 10,500   19,300    
Construction in progress within property and equipment 262,300   262,300   306,000
Intersegment eliminations          
Segment Reporting Information [Line Items]          
Total consolidated gross revenue 3,070 7,142 7,897 14,694  
External Customer          
Segment Reporting Information [Line Items]          
Total consolidated gross revenue 446,911 475,636 913,907 948,174  
Europe Caspian          
Segment Reporting Information [Line Items]          
Total consolidated gross revenue 226,183 237,063 449,524 470,714  
Total earnings from unconsolidated affiliates, net of losses - equity method investments 153 524 252 897  
Total consolidated operating income (loss) 15,060 40,627 29,257 82,822  
Total depreciation and amortization 10,195 10,609 20,977 20,356  
Total identifiable assets 1,123,176   1,123,176   968,234
Total investments in unconsolidated affiliates - equity method 273   273   65
Europe Caspian | Intersegment eliminations          
Segment Reporting Information [Line Items]          
Total consolidated gross revenue 685 3,672 1,077 7,067  
Europe Caspian | External Customer          
Segment Reporting Information [Line Items]          
Total consolidated gross revenue 225,498 233,391 448,447 463,647  
Africa          
Segment Reporting Information [Line Items]          
Total consolidated gross revenue 65,301 87,666 144,216 175,136  
Total consolidated operating income (loss) 7,574 19,667 20,526 37,293  
Total depreciation and amortization 9,809 3,936 15,693 7,899  
Total identifiable assets 344,405   344,405   431,466
Accelerated depreciation 6,500   8,800    
Africa | Intersegment eliminations          
Segment Reporting Information [Line Items]          
Total consolidated gross revenue 2 0 2 0  
Africa | External Customer          
Segment Reporting Information [Line Items]          
Total consolidated gross revenue 65,299 87,666 144,214 175,136  
Americas          
Segment Reporting Information [Line Items]          
Total consolidated gross revenue 73,578 88,193 153,830 178,062  
Total earnings from unconsolidated affiliates, net of losses - equity method investments (15,513) (3,428) (9,316) 480  
Total consolidated operating income (loss) (9,046) 13,566 7,486 40,224  
Total depreciation and amortization 10,570 8,953 20,726 16,142  
Total identifiable assets 878,553   878,553   926,956
Total investments in unconsolidated affiliates - equity method 189,791   189,791   210,025
Accelerated depreciation 3,200   6,100    
Americas | Intersegment eliminations          
Segment Reporting Information [Line Items]          
Total consolidated gross revenue 1,720 2,727 5,372 6,241  
Americas | External Customer          
Segment Reporting Information [Line Items]          
Total consolidated gross revenue 71,858 85,466 148,458 171,821  
Asia Pacific          
Segment Reporting Information [Line Items]          
Total consolidated gross revenue 78,693 60,875 159,081 120,431  
Total consolidated operating income (loss) 5,013 2,461 4,325 5,791  
Total depreciation and amortization 4,858 4,640 13,177 8,880  
Total identifiable assets 366,135   366,135   366,181
Accelerated depreciation 800   4,400    
Asia Pacific | Intersegment eliminations          
Segment Reporting Information [Line Items]          
Total consolidated gross revenue 2 0 2 0  
Asia Pacific | External Customer          
Segment Reporting Information [Line Items]          
Total consolidated gross revenue 78,691 60,875 159,079 120,431  
Corporate And Other          
Segment Reporting Information [Line Items]          
Total consolidated gross revenue 6,226 8,981 15,153 18,525  
Total consolidated operating income (loss) (34,427) (32,384) (64,891) (57,611)  
Total depreciation and amortization 1,955 67 3,960 262  
Total identifiable assets 488,783   488,783   $ 537,883
Corporate And Other | Intersegment eliminations          
Segment Reporting Information [Line Items]          
Total consolidated gross revenue 661 743 1,444 1,386  
Corporate And Other | External Customer          
Segment Reporting Information [Line Items]          
Total consolidated gross revenue $ 5,565 $ 8,238 $ 13,709 $ 17,139