Stockholders' Equity and Non-controlling Interests - Distributions (Details) $ / shares in Units, $ in Thousands									3 Months Ended		6 Months Ended		9 Months Ended	12 Months Ended
	Jul. 22, 2016 shares	Jul. 15, 2016 $ / shares	Jun. 02, 2016	Apr. 15, 2016 $ / shares	Jan. 15, 2016 $ / shares	Oct. 15, 2015 $ / shares	Jul. 15, 2015 $ / shares	Apr. 15, 2015 $ / shares	Jul. 15, 2016 $ / shares	Mar. 31, 2016 shares	Jun. 30, 2016 USD ($) shares	Jun. 30, 2015 USD ($) shares	Jan. 15, 2016 $ / shares	Dec. 31, 2015 USD ($) shares	Jun. 02, 2015 shares
Shareholders' Equity
Cash dividend paid (in dollars per share) | $ / shares				$ 0.1275	$ 0.1275	$ 0.1275	$ 0.1275	$ 0.1160					$ 0.4985
OP units
Shareholders' Equity
OP units outstanding for redemption											3,749,396			1,945,000	1,993,709
Redemption of initial shares (in shares)										427,900
Subsequent event
Shareholders' Equity
Cash dividend paid (in dollars per share) | $ / shares		$ 0.1275							$ 0.2550
Subsequent event | OP units
Shareholders' Equity
Redemption of initial shares (in shares)	681,222
Operating Partnership
Shareholders' Equity
Parent ownership interest (as a percent)											67.20%			74.10%
Operating Partnership | OP units
Shareholders' Equity
Parent ownership interest (as a percent)											67.20%
Common stock
Shareholders' Equity
Common stock issued (in shares)											697,000
Issuance of stock as consideration in real estate acquisition (in shares)												888,000
Common stock | OP units
Shareholders' Equity
Issuance of stock as consideration in real estate acquisition (in shares)										427,900
Common stock | Subsequent event | OP units
Shareholders' Equity
Issuance of stock as consideration in real estate acquisition (in shares)	681,222
Common stock | Operating Partnership | OP units
Shareholders' Equity
Ratio for conversion into common shares			1								1
Non-controlling Interests in Operating Partnership
Shareholders' Equity
Increase of non-controlling interests and decrease of additional paid in capital | $											$ (4,193)	$ (1,840)
Non-controlling Interests in Operating Partnership | Operating Partnership
Shareholders' Equity
Increase of non-controlling interests and decrease of additional paid in capital | $											$ 4,200			$ 1,800
Pittman Hough Farms | Operating Partnership
Shareholders' Equity
Noncontrolling ownership interest (as a percent)											32.80%			25.90%