Quarterly report pursuant to Section 13 or 15(d)

Capital Stock Transactions - Summary of Non-Vested Restricted Stock Awards and Activities (Details)

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Capital Stock Transactions - Summary of Non-Vested Restricted Stock Awards and Activities (Details) - Non Vested Restricted Stock - $ / shares
1 Months Ended 9 Months Ended
Aug. 31, 2018
Jun. 30, 2018
Dec. 31, 2018
Number of Shares      
Non-vested restricted stock number of shares beginning balance (in shares)     132,569
Granted (in shares) 306,655 232,558 539,213
Vested (in shares)     (209,233)
Non-vested restricted stock number of shares ending balance (in shares)     462,549
Weighted Average Grant Date Fair Value ($ per share)      
Non-vested restricted stock weighted average grant date fair value beginning balance (in dollars per share)     $ 1.09
Granted (in dollars per share)     1.53
Vested (in dollars per share)     1.20
Non-vested restricted stock weighted average grant date fair value ending balance (in dollars per share)     $ 1.56