Common and Preferred Stock (Details Textual) - USD ($)				3 Months Ended		9 Months Ended		12 Months Ended
	Nov. 07, 2018	Sep. 11, 2017	Aug. 05, 2016	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017	Jun. 30, 2018	Mar. 31, 2018
Preferred Stock, Dividend Rate, Percentage						2.00%
Preferred Stock Dividends, Income Statement Impact				$ 61,000	$ 6,901,000	$ 181,000	$ 6,901,000	$ 6,900,000
Dividends Payable, Current				$ 62,000		$ 62,000		$ 73,000	$ 60,000	$ 59,000
Fbr Capital Markets Co [Member]
Stock Issued During Period, Shares, New Issues				1,600,000	800,000	1,700,000	11,000,000
Stock Issued During Period, Value, New Issues			$ 40,000,000
Brokerage Commission percentage			3.00%
Proceeds from Issuance of Common Stock				$ 6,000,000	$ 400,000	$ 6,400,000	$ 6,400,000
Fbr Capital Markets Co [Member] | Subsequent Event [Member]
Stock Issued During Period, Shares, New Issues	1,900,000
Proceeds from Issuance of Common Stock	$ 5,800,000
Series A Preferred Stock [Member]
Preferred Stock, Dividend Rate, Percentage		2.00%
Preferred Stock Conversion Price Per Share		$ 18.90
Preferred Stock, Redemption Terms		(i) the VWAP (as defined in the Certificate of Designation) for at least 20 trading days in any 30 trading day period is greater than $70.00, subject to adjustment in the case of stock split, stock dividends or the like the Company has the right, after providing notice not less than 6 months prior to the redemption date, to redeem, in whole or in part, on a pro rata basis from all holders thereof based on the number of shares of Series A Preferred Stock then held, the outstanding Series A Preferred Stock, for cash, at a redemption price per share of Series A Preferred Stock of $7,875.00, subject to appropriate adjustment in the event of any stock dividend, stock split, combination or other similar recapitalization with respect to the Series A Convertible Preferred Stock, or (ii) the five year anniversary of the issue date, the Company has the right to redeem, in whole or in part, on a pro rata basis from all holders thereof based on the number of shares of Series A Convertible Preferred Stock then held, the outstanding Series A Preferred Stock, for cash, at a redemption price per share equal to the Liquidation Value
Series A Preferred Stock [Member] | Private Placement [Member]
Stock Issued During Period, Shares, New Issues		120,000
Preferred Stock, Par or Stated Value Per Share		$ 0.001
Proceeds from Issuance of Convertible Preferred Stock		$ 12,000,000
Sale of Stock, Consideration Received Per Transaction		$ 100