Equity - Narrative (Details) - USD ($)	1 Months Ended		3 Months Ended
	Feb. 08, 2018	Jun. 30, 2016	Dec. 31, 2017	Dec. 31, 2016	Jan. 11, 2018	Sep. 30, 2017	Sep. 05, 2017	Sep. 30, 2016
Equity incentive plans
Dividends declared per share (in dollars per share)			$ 0.0018
Per Share Data
Effect of diluted securities (in shares)			200,000,000	0
New Share Repurchase Program
Share Buyback
Beneficial interest purchased authorized amount							$ 5,000,000
Shares repurchased (in shares)			0
Restricted Stock
Restricted Shares
Compensation expense			$ 243,000	$ 214,000
Deferred unearned compensation			$ 2,113,000			$ 2,356,000
Remaining weighted average vesting period			2 years 1 month
Incentive Plan 2016
Restricted Shares
Shares authorized for issuance (up to) (in shares)			600,000
Incentive Plan 2016 | Restricted Stock Units (RSUs)
Restricted Shares
Issued (in shares)		450,000
Vesting period for shares issued			5 years
Compensation expense			$ 72,000	$ 110,000
Deferred unearned compensation			$ 942,000					$ 1,015,000
Incentive Plan 2016 | Restricted Stock
Restricted Shares
Vesting period for shares issued			5 years
Incentive Plan 2012
Restricted Shares
Number of additional awards available for grant (in shares)			0
Incentive Plan 2012 | Restricted Stock
Restricted Shares
Shares outstanding (in shares)			689,375
Subsequent event | Private placement
Equity incentive plans
Common stock issued in offering					$ 20,000,000
Shares sold in offering	113,566
Aggregate net proceeds from stock offering	$ 1,463,000
Payments for commissions	50,000
Professional fees	$ 50,000