XML 71 R51.htm IDEA: XBRL DOCUMENT v3.5.0.2
Marketable Securities (Details) - USD ($)
$ in Thousands
12 Months Ended
Mar. 31, 2016
Mar. 31, 2015
Mar. 31, 2014
Marketable Securities [Abstract]      
Marketable securities, cost $ 13,611 $ 9,539  
Marketable securities, market value 12,020 9,803  
Unrealized gain (loss) on marketable securities (1,860) 954 $ (865)
Proceeds from sale of marketable securities 6,798 1,011
Realized gain from sale of marketable securities $ 526 $ 102