Subsequent Events (Details) - USD ($) $ / shares in Units, $ in Thousands	Jan. 27, 2020	Jan. 25, 2020	Jan. 21, 2020	Nov. 01, 2019	Feb. 27, 2019	Dec. 31, 2019	Jun. 30, 2019
Subsequent Event [Line Items]
Common Stock, Par or Stated Value Per Share						$ 0.001	$ 0.001
Underwriters option to purchase additional shares (in shares)			375,000
Class of Warrant or Right, Exercise Price of Warrants or Rights					$ 12.20
Exchange Agreement | Subsequent event
Subsequent Event [Line Items]
Common stock, shares issued and sold (in shares)	677,224
Warrants to purchase additional shares (in shares)	347,222
Class of Warrant or Right, Exercise Price of Warrants or Rights	$ 3.00
Over Allotment Option | Subsequent event
Subsequent Event [Line Items]
Common stock, shares issued and sold (in shares)			2,500,000
Common Stock, Par or Stated Value Per Share			$ 0.001
Share Price		$ 3.00	$ 3.00
Underwriters option to purchase additional shares (in shares)		375,000	375,000
Period to avail over-allotment option			45 days
Underwriter's commission and agreed upon customary fees and expenses		$ 7,780	$ 7,800
Securities Purchase Agreement
Subsequent Event [Line Items]
Common stock, shares issued and sold (in shares)					347,222
Common Stock, Par or Stated Value Per Share					$ 0.001
Warrants to purchase additional shares (in shares)					347,222
Series A Convertible Preferred Stock [Member]
Subsequent Event [Line Items]
Common stock, shares issued and sold (in shares)				75,000