Subsequent Events (Details)			3 Months Ended		6 Months Ended
	Aug. 03, 2016 USD ($)	Jul. 22, 2016 shares	Sep. 30, 2016 USD ($) a $ / shares shares	Mar. 31, 2016 shares	Jun. 30, 2015 shares	Jun. 30, 2016 a
Subsequent Events
Total approximate acres | a						2,605
Expected
Subsequent Events
Total approximate acres | a			1,574
Purchase price | $			$ 5,619,000
Expected | Boys | Arkansas
Subsequent Events
Total approximate acres | a			1,122
Purchase price | $			$ 4,099,000
Consideration paid in cash | $			$ 3,300,000
Expected | Hooks | Georgia
Subsequent Events
Total approximate acres | a			445
Purchase price | $			$ 1,400,000
Expected | Tristan Cleer Farm | Illinois
Subsequent Events
Total approximate acres | a			7
Purchase price | $			$ 120,000
Subsequent event | Board of Directors
Subsequent Events
Cash dividend declared | $	$ 0.1275
OP units
Subsequent Events
Stock repurchased (in shares) | shares				427,900
OP units | Expected | Boys | Arkansas
Subsequent Events
Consideration in OP units | shares			69,961
OP units | Subsequent event
Subsequent Events
Stock repurchased (in shares) | shares		681,222
OP units | Subsequent event | Expected | Arkansas
Subsequent Events
Price of OP unit (per op unit) | $ / shares			$ 11.79
Common stock
Subsequent Events
Consideration in OP units | shares					888,000
Common stock | OP units
Subsequent Events
Consideration in OP units | shares				427,900
Common stock | OP units | Subsequent event
Subsequent Events
Consideration in OP units | shares		681,222