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Stockholders' Equity (Narrative) (Details) - USD ($)
$ / shares in Units, $ in Millions
 1 Months Ended 12 Months Ended
Oct. 05, 2015
Sep. 30, 2015
Sep. 24, 2013
Dec. 31, 2015
Dec. 31, 2014
Common stock, par value (in dollars per share)       $ 0.001 $ 0.001
Common stock, outstanding shares       8,699,712 7,405,962
Issuance of common stock (in shares) 168,750 1,125,000 1,265,000    
Issuance of common stock, per share $ 4.00 $ 4.00 $ 7.00    
Net proceeds from issuance of common stock $ 0.6 $ 3.9 $ 7.9    
Outstanding purchase of warrants (in shares)       50,600 280,600
Warrants exercisable price per share       $ 7.00 $ 13.91
Warrant expiration date range start       Apr. 26, 2015  
Warrant expiration date range end       Sep. 18, 2018  
Warrants exercised       0 0
Preferred stock, authorized       5,000,000 5,000,000
Preferred stock, par value (in dollars per share)       $ 0.001 $ 0.001
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Gain (Loss), before Reclassification and Tax       $ 2.5 $ 1.7