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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

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