Shareholders' Equity - Narrative (Details) $ / shares in Units, $ in Thousands	1 Months Ended	3 Months Ended	9 Months Ended	12 Months Ended
	Jun. 30, 2019 USD ($) $ / shares shares	Sep. 30, 2019 USD ($) shares	Sep. 30, 2019 USD ($) vote shares	Dec. 31, 2018 USD ($) shares	Dec. 05, 2018 shares
Equity, Class of Treasury Stock [Line Items]
Common stock, shares issued (in shares)		9,588,873	9,588,873	8,478,202
Common stock, shares outstanding (in shares)		9,588,873	9,588,873	8,478,202
Number of votes per share | vote			1
Common stocks
Equity, Class of Treasury Stock [Line Items]
Common stock, shares issued (in shares)		9,588,873	9,588,873	8,478,202
Common stock, shares outstanding (in shares)		9,588,873	9,588,873	8,478,202
Stock Repurchase Program, December 2018
Equity, Class of Treasury Stock [Line Items]
Number of shares authorized for repurchase (in shares)					1,000,000
Shares repurchased (in shares)		11,393	154,208	129,175
Shares repurchased | $		$ 41	$ 638	$ 584
Private placement | Common stocks
Equity, Class of Treasury Stock [Line Items]
Common equity issued | $	$ 5,000
Common equity issued (in shares)	1,176,471
Offering price per share (in dollars per share) | $ / shares	$ 4.25
Restricted Stock Units (RSUs)
Equity, Class of Treasury Stock [Line Items]
Shares repurchased (in shares)		6,359	8,667	8,053
Shares repurchased | $		$ 25	$ 36	$ 52