Common and Preferred Stock (Details)					1 Months Ended	3 Months Ended		6 Months Ended		12 Months Ended
	Oct. 15, 2018 USD ($) $ / shares shares	Oct. 10, 2018 shares	Sep. 11, 2017 USD ($) D $ / shares shares	Aug. 05, 2016 USD ($)	Oct. 31, 2018 $ / shares	Jun. 30, 2019 USD ($) $ / shares shares	Jun. 30, 2018 USD ($) shares	Jun. 30, 2019 USD ($) $ / shares shares	Jun. 30, 2018 USD ($) shares	Dec. 31, 2018 USD ($) $ / shares shares
Preferred Stock, Dividend Rate, Percentage										2.00%
Proceeds from Issuance of Common Stock										$ 12,200,000
Class of Warrant or Right, Number of Securities Called by Warrants or Rights | shares	13,672,173
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares	$ 1.38				$ 1.38
Shares Issued, Price Per Share | $ / shares	$ 1.15
Preferred Stock Redemption Discount										$ 9,100,000
Percentage of issue of the public offering					120.00%
Preferred Stock Shares Converted | shares						302		1,338
Preferred Shares, Unamortized Discount From Conversion						$ 117,000		$ 515,000
Conversion of Stock, Shares Converted | shares								7,900
Common Stock, Discount on Shares						$ 3,000,000		$ 3,000,000
Proceeds from Issuance or Sale of Equity	$ 18,600,000
Over-Allotment Option [Member]
Stock Issued During Period, Shares, New Issues | shares	2,428,825	2,428,825
Class of Warrant or Right, Number of Securities Called by Warrants or Rights | shares	2,428,825	2,428,825
Issue of warrants to purchase common stock | shares		1,807,826
Fbr Capital Markets Co [Member]
Stock Issued During Period, Shares, New Issues | shares							0		1,700,000	3,500,000
Stock Issued During Period, Value, New Issues				$ 40,000,000
Brokerage Commission percentage				3.00%
Proceeds from Issuance of Common Stock							$ 400,000		$ 400,000	$ 12,200,000
Series A Preferred Stock [Member]
Preferred Stock, Par or Stated Value Per Share | $ / shares						$ 0.001		$ 0.001		$ 0.001
Preferred Stock, Dividend Rate, Percentage			2.00%
Preferred Stock Conversion Price Per Share | $ / shares			$ 18.90
Debt Instrument, Convertible, Threshold Trading Days | D			20
Debt Instrument, Convertible, Threshold Consecutive Trading Days | D			30
Dividends Payable, Amount Per Share | $ / shares			$ 70.00
Adjustments to Additional Paid in Capital, Stock Split			$ 7,875
Preferred Stock Dividends, Income Statement Impact						$ 61,000	61,000	$ 122,000	120,000
Series A Preferred Stock [Member] | Private Placement [Member]
Stock Issued During Period, Shares, New Issues | shares			120,000
Preferred Stock, Par or Stated Value Per Share | $ / shares			$ 0.001
Proceeds from Issuance of Convertible Preferred Stock			$ 12,000,000
Sale of Stock, Consideration Received Per Transaction			$ 100
Series B Preferred Stock [Member]
Preferred Stock, Par or Stated Value Per Share | $ / shares	$ 1,000					$ 1,000		$ 1,000		$ 1,000
Preferred Stock Dividends, Income Statement Impact						$ 117,000	$ 0	$ 515,000	$ 0
Class of Warrant or Right, Number of Securities Called by Warrants or Rights | shares	13,672,173
Stock Issued During Period, Value, Issued for Services	$ 1,000
Percentage Exceed Aggregate Number Of Common Stock					4.99%
Percentage Exceed Aggregate Number Of Common Stock Outstanding					9.99%
Increase Decrease in Excess of Other Percentage					9.99%
Conversion of Stock, Shares Converted | shares	13,672,173
Common Class A [Member]
Stock Issued During Period, Shares, New Issues | shares	2,520,000
Common Class B [Member]
Stock Issued During Period, Shares, New Issues | shares	15,723
Preferred Stock Conversion Price Per Share | $ / shares	$ 1.15