Stockholders' Equity - Preferred Stock (Details)	12 Months Ended
	Dec. 31, 2019 item $ / shares shares	Dec. 31, 2018 $ / shares shares
Class of Stock
Preferred stock, calendar days | item	180
Average Trading volume days | item	50
Preferred stock, shares issued	500,000
Series A convertible preferred stock; Designated — 1,500 shares, Issued and outstanding — 1 share
Class of Stock
Preferred stock, shares authorized	5,000,000	5,000,000
Preferred stock, par value | $ / shares	$ 0.01	$ 0.01
Preferred stock, shares designated	1,500,000	1,500,000
Annual percentage of dividend of preferred stock	1.00%
Preferred stock, shares outstanding	1,000	1,000
Series A preferred stock liquidation preference per share | $ / shares	$ 1
Series A Preferred stock conversion price per share | $ / shares	$ 272.00
Preferred stock, shares issued	1,000	1,000
Series B1 redeemable convertible preferred stock (Note 7); Designated — 278 shares, Issued and outstanding — 24 and 0 shares at December 31, 2019 and December 31, 2018, respectively
Class of Stock
Preferred stock, shares authorized	5,000,000	5,000,000
Preferred stock, par value | $ / shares	$ 0.01	$ 0.01
Preferred stock, shares designated	277,921	278,000
Preferred stock, shares outstanding	24,000	0
Preferred stock redemption price per share | $ / shares	$ 152.00
Preferred stock conversion price | $ / shares	$ 1.52
Preferred stock, shares issued	24,000	0
Series B2 Redeemable Convertible Preferred Stock
Class of Stock
Preferred stock, shares designated	98,685
Preferred stock redemption price per share | $ / shares	$ 152.00
Preferred stock conversion price | $ / shares	$ 1.52
Series B3 Redeemable Convertible Preferred Stock
Class of Stock
Preferred stock, shares designated	82,814
Preferred stock, shares outstanding	0
Preferred stock redemption price per share | $ / shares	$ 182.00
Preferred stock conversion price | $ / shares	$ 1.82
Series B4 Redeemable Convertible Preferred Stock
Class of Stock
Preferred stock, shares designated	82,814
Preferred stock, shares outstanding	4
Preferred stock redemption price per share | $ / shares	$ 182.00
Preferred stock conversion price | $ / shares	$ 1.82