v3.3.1.900
Business Segment Information (Geographic Data) (Details)
$ in Thousands
3 Months Ended 9 Months Ended
Dec. 31, 2015
USD ($)
Dec. 31, 2014
USD ($)
Dec. 31, 2015
USD ($)
geographic_area
Dec. 31, 2014
USD ($)
Mar. 31, 2015
USD ($)
Geographic Data          
Number of geographic areas the Company operates in | geographic_area     2    
Operating revenues $ 55,144 $ 60,145 $ 173,184 $ 184,955  
Assets 423,529   423,529   $ 466,025
United States of America          
Geographic Data          
Operating revenues 53,876 57,698 168,780 176,715  
Assets 416,725   416,725   458,197
Europe          
Geographic Data          
Operating revenues 1,268 $ 2,447 4,404 $ 8,240  
Assets $ 6,804   $ 6,804   $ 7,828