Stockholders' Equity - Schedule of Common Stock Authorized, Issued and Outstanding (Details) - $ / shares shares in Thousands	Dec. 31, 2019	Dec. 31, 2018
Class AX
Class of Stock [Line Items]
Common stock, shares authorized (in shares)	40,000	40,000
Common stock, shares issued (in shares)	18,885	19,123
Common stock, shares outstanding (in shares)	18,885	19,123
Common stock par value (in dollars per share)	$ 0.001	$ 0.001
Class TX
Class of Stock [Line Items]
Common stock, shares authorized (in shares)	40,000	40,000
Common stock, shares issued (in shares)	19,901	19,969
Common stock, shares outstanding (in shares)	19,901	19,969
Common stock par value (in dollars per share)	$ 0.001	$ 0.001
Class IX
Class of Stock [Line Items]
Common stock, shares authorized (in shares)	10,000	10,000
Common stock, shares issued (in shares)	91	96
Common stock, shares outstanding (in shares)	91	96
Common stock par value (in dollars per share)	$ 0.001	$ 0.001
Class JX
Class of Stock [Line Items]
Common stock, shares authorized (in shares)	10,000	10,000
Common stock, shares issued (in shares)	0	0
Common stock, shares outstanding (in shares)	0	0
Common stock par value (in dollars per share)	$ 0.001	$ 0.001
Class T
Class of Stock [Line Items]
Common stock, shares authorized (in shares)	350,000	350,000
Common stock, shares issued (in shares)	28,837	2,858
Common stock, shares outstanding (in shares)	28,837	2,858
Common stock par value (in dollars per share)	$ 0.001	$ 0.001
Class S
Class of Stock [Line Items]
Common stock, shares authorized (in shares)	350,000	350,000
Common stock, shares issued (in shares)	0	0
Common stock, shares outstanding (in shares)	0	0
Common stock par value (in dollars per share)	$ 0.001	$ 0.001
Class D
Class of Stock [Line Items]
Common stock, shares authorized (in shares)	350,000	350,000
Common stock, shares issued (in shares)	6,927	1,479
Common stock, shares outstanding (in shares)	6,927	1,479
Common stock par value (in dollars per share)	$ 0.001	$ 0.001
Class I
Class of Stock [Line Items]
Common stock, shares authorized (in shares)	350,000	350,000
Common stock, shares issued (in shares)	7,206	59
Common stock, shares outstanding (in shares)	7,206	59
Common stock par value (in dollars per share)	$ 0.001	$ 0.001