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Long-term Debt Long-term debt table (Details) - USD ($)
$ in Thousands
Jun. 30, 2018
Mar. 31, 2018
Debt Instrument [Line Items]    
Long-term Debt, Gross $ 13,085 $ 13,187
Long-term Debt, Current Maturities (426) (421)
Long-term Debt $ 12,659 $ 12,766