Shareholders' Equity - Narrative (Details) $ / shares in Units, $ in Thousands	1 Months Ended	6 Months Ended	12 Months Ended
	Jun. 30, 2019 USD ($) $ / shares shares	Jun. 30, 2019 USD ($) vote $ / shares shares	Dec. 31, 2018 USD ($) shares	Dec. 05, 2018 shares
Equity, Class of Treasury Stock [Line Items]
Common stock, shares issued (in shares)	9,519,550	9,519,550	8,478,202
Common stock, shares outstanding (in shares)	9,519,550	9,519,550	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)	9,519,550	9,519,550	8,478,202
Common stock, shares outstanding (in shares)	9,519,550	9,519,550	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)		142,815	129,175
Shares repurchased | $		$ 608	$ 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	$ 4.25
Restricted Stock Units (RSUs)
Equity, Class of Treasury Stock [Line Items]
Shares repurchased (in shares)		2,308	8,053
Shares repurchased | $		$ 11	$ 52