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Net Loss per Common Share - Calculation of Net Loss and Number of Shares Used to Compute Basic and Diluted Earnings per Share (Details) - USD ($) $ / shares in Units, $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Earnings Per Share [Abstract]
Net income (loss) - basic				$ 527	$ (13,276)
Adjustment for gain on warrant income				(619)
Net loss - diluted				$ (92)	$ (13,276)
Weighted average shares outstanding - basic	[1]	916,706	1,416	788,512	848
Weighted average shares outstanding - diluted	[1]	916,706	1,416	799,430	848
Net income (loss) per share - basic	[1]	$ (7.26)	$ (1,373)	$ 0.67	$ (15,656)
Net income (loss) per share - diluted	[1]	$ (7.26)	$ (1,373)	$ (0.12)	$ (15,656)
[1] reflects a one-for-three hundred and fifty (1:350) reverse stock split effected on November 6, 2017 and a one-for-five hundred (1:500) reverse stock split effected on May 2, 2018.

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Amount of increase (decrease) to net income used for calculating diluted earnings per share (EPS), resulting from the assumed exercise of dilutive convertible securities excluding adjustments related to ESOP convertible preferred stock, stock options, and restrictive stock units.

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