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Consolidated Balance Sheets (Parentheticals) - USD ($)
$ / shares in Thousands, $ in Thousands
Dec. 31, 2016
Dec. 31, 2015
Common stock, par value (in dollars per share) $ 0 $ 0
Common stock, shares authorized (in shares) 30,000,000 30,000,000
Common stock, shares issued (in shares) 7,677,637 6,775,971
Common stock, shares outstanding (in shares) 7,677,637 6,775,971
Preferred stock, par value (in dollars per share) $ 0 $ 0
Preferred stock, shares authorized (in shares) 1,500,000 1,500,000
Preferred stock, shares issued (in shares) 0 0
Preferred stock, shares outstanding (in shares) 0 0
Series A redeemable, par value (in dollars per share) $ 0 $ 0
Series A redeemable, shares authorized (in shares) 500,000 500,000
Series A redeemable, shares issued (in shares) 0 0
Series A redeemable, shares outstanding (in shares) 0 0
Unamortized issuance discount $ 497
Investments - related parties, original issue discount $ 45 $ 0