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Consolidated Balance Sheets (Parenthetical) - USD ($)
shares in Thousands, $ in Thousands
Mar. 31, 2017
Mar. 31, 2016
Consolidated Balance Sheets    
Trade accounts receivable, allowance for doubtful accounts (in dollars) $ 389 $ 714
Preferred stock, par value (in dollars per share) $ 1.00 $ 1.00
Preferred stock, Authorized shares 2,000 2,000
Preferred stock, Issued shares 0 0
Preferred stock, Outstanding shares 0 0
Common stock, par value (in dollars per share) $ 0.10 $ 0.10
Common stock, Authorized shares 70,000 70,000
Common stock, Issued shares 32,488 32,048
Common stock, Outstanding shares 32,488 32,048