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Condensed Consolidated Balance Sheets (Unaudited) (Parentheticals) - USD ($) $ / shares in Thousands, $ in Thousands | Dec. 31, 2016 | Jun. 30, 2016
--- | --- | ---
Preferred shares, no par value (in dollars per share) | $ 0 | $ 0
Preferred shares, authorized (in shares) | 1,000,000 | 1,000,000
Preferred shares, issued (in shares) | 0 | 0
Common stock, no par value (in dollars per share) | $ 0 | $ 0
Common stock, shares authorized (in shares) | 40,000,000 | 40,000,000
Common stock, shares outstanding (in shares) | 25,021,703 | 24,982,219
Allowance for doubtful accounts | $ 381 | $ 226

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