Equity Transactions and Instruments (Details Textual) - USD ($)	1 Months Ended	3 Months Ended			9 Months Ended
	May 31, 2014	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2012	Sep. 30, 2017	Sep. 30, 2016	Oct. 03, 2017	Dec. 31, 2016	Jun. 30, 2014
Class of Stock [Line Items]
Preferred stock, shares authorized		2,000,000			2,000,000
Preferred stock, par value		$ 0.0001			$ 0.0001
Preferred stock, shares issued				1,000,000					500,000
Shares of preferred stock, undesignated and unissued		500,000			500,000
Series A Preferred Stock [Member]
Class of Stock [Line Items]
Preferred stock, shares authorized		1,000,000			1,000,000			1,000,000
Preferred stock, par value		$ 0.0001			$ 0.0001			$ 0.0001
Preferred stock, shares issued		1,000,000			1,000,000			1,000,000
Dividend rate on preferred stock				7.00%
Annual rate of preferred stock, per share				$ 7.00
Preferred stock, liquidation preference per share				$ 100
Shares of common stock converted at initial conversion				10.6022
Initial conversion price of common stock				$ 9.43
Temporary suspension of dividend payments, term					15 months
Dividends on Preferred Stock		$ 0	$ 1,750,000		$ 1,750,000	$ 5,250,000
Accrued dividends on preferred stock								$ 300,000
Dividends accrued		$ 0			$ 292,000	292,000
Preferred stock, shares outstanding		1,000,000			1,000,000			1,000,000
Series A Preferred Stock [Member] | Private Offering [Member]
Class of Stock [Line Items]
Preferred stock, shares issued				1,000,000
Dividend rate on preferred stock				7.00%
Proceeds from sale of preferred stock				$ 96,500,000
Aggregate discount and offering costs			1,800,000	$ 3,500,000	$ 1,800,000	5,300,000
Series B Preferred Stock [Member]
Class of Stock [Line Items]
Preferred stock, shares authorized		500,000			500,000			500,000
Preferred stock, par value		$ 0.0001			$ 0.0001			$ 0.0001
Preferred stock, shares issued		500,000			500,000			500,000
Dividend rate on preferred stock	6.75%				6.75%
Annual rate of preferred stock, per share					$ 16.875
Preferred stock, liquidation preference per share		$ 250			$ 250
Shares of common stock converted at initial conversion		33.456			33.456
Initial conversion price of common stock		$ 7.47			$ 7.47
Temporary suspension of dividend payments, term					15 months
Dividends on Preferred Stock		$ 0	2,109,000		$ 2,109,000	6,327,000
Accrued dividends on preferred stock								$ 400,000
Dividends accrued		$ 0			$ 352,000	352,000
Preferred stock, shares outstanding		499,955			499,955			500,000
Series B Preferred Stock [Member] | Public Offering [Member]
Class of Stock [Line Items]
Preferred stock, shares issued	500,000
Preferred stock, price per share	$ 250
Series B Preferred Stock [Member] | Public Offering [Member]
Class of Stock [Line Items]
Proceeds from sale of preferred stock	$ 120,800,000
Aggregate discount and offering costs	$ 400,000		$ 2,100,000		$ 2,100,000	$ 6,300,000
Preferred stock, liquidation preference per share		$ 250			$ 250
Preferred stock, purchase price per share	$ 242.50
Underwriting discount price per share	$ 7.50
Payment of underwriter discount	$ 3,800,000
Subsequent Event [Member] | Series A Preferred Stock [Member]
Class of Stock [Line Items]
Initial conversion price of common stock							$ 12.26