Stockholders' Equity of the Company - Schedule of Common Stock Issued and Proceeds Received Dividend Reinvestments (Details) - Dividend Reinvestment and Stock Purchase Plan (DRIP) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018
Stockholders' Equity
Issuance of common stock (in shares)	2,995	674
Dividend reinvestments/stock purchases under the DRSPP	$ 263	$ 64