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Amount of cash outflow for realized tax benefit related to deductible compensation cost reported on the entity's tax return for equity instruments in excess of the compensation cost for those instruments recognized for financial reporting purposes.

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Stock-Based Compensation - Narrative (Details) $ / shares in Units, $ in Thousands	1 Months Ended			3 Months Ended		9 Months Ended
	Sep. 30, 2021 USD ($) $ / shares shares	Aug. 31, 2021 $ / shares shares	May 31, 2021 director $ / shares shares	Sep. 30, 2021 USD ($) shares	Sep. 30, 2020 USD ($) shares	Sep. 30, 2021 USD ($) shares	Sep. 30, 2020 USD ($) shares	May 31, 2017 shares
Share-based Compensation
Compensation expense related to stock based awards outstanding \| $				$ 500	$ 300	$ 2,200	$ 1,900
Proceeds received upon exercise of stock options \| $						110
Total share-based compensation cost not yet recognized \| $	$ 3,800			3,800		$ 3,800
Share-based compensation cost not yet recognized, period for recognition						2 years 3 months 18 days
Certain Officers
Share-based Compensation
Payments related to tax withholding for stock-based compensation \| $				$ 700	$ 200	$ 900	$ 200
Maximum
Share-based Compensation
Approved and authorized maximum number of shares to be issued \| shares								2,400,000
Stock options
Share-based Compensation
Expiration period						10 years
Forfeiture rate applied to awards						5.50%
Proceeds received upon exercise of stock options \| $						$ 100
Exercise of stock options, shares \| shares				4,791	0	28,546	0
Stock options \| Minimum
Share-based Compensation
Vesting period						3 years
Stock options \| Maximum
Share-based Compensation
Vesting period						5 years
Proceeds received upon exercise of stock options \| $				$ 100
Restricted stock
Share-based Compensation
Forfeiture rate applied to awards						3.20%
Restricted stock \| Independent Directors and Certain Officers and Executives
Share-based Compensation
Awards granted in period (in shares) \| shares			489,850
Grant date fair value (in dollars per share) \| $ / shares			$ 6.01
Restricted stock \| Independent Directors
Share-based Compensation
Number of independent directors receiving awards \| director			6
Awards granted in period (in shares) \| shares	18,215		89,850
Grant date fair value (in dollars per share) \| $ / shares	$ 5.49
Restricted stock \| Certain Executives
Share-based Compensation
Vesting period	3 years
Awards granted in period (in shares) \| shares	9,901
Grant date fair value (in dollars per share) \| $ / shares	$ 5.05
Performance Shares \| Certain Executives
Share-based Compensation
Awards granted in period (in shares) \| shares		259,565	240,000
Grant date fair value (in dollars per share) \| $ / shares		$ 2.26
Performance period		1 year	3 years
Performance Shares \| Vesting If Performance Target Is Met \| Certain Executives
Share-based Compensation
Vesting percentage		50.00%	100.00%
Performance Shares \| Vesting on First and Second Anniversary of Determination \| Certain Executives
Share-based Compensation
Vesting percentage		25.00%