Common Stock (Details) - USD ($)		3 Months Ended		12 Months Ended
	May 04, 2021	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021
Employee [Member] | Minimum [Member]
Class of Stock [Line Items]
Restricted shares, vesting period		1 year
Employee [Member] | Maximum [Member]
Class of Stock [Line Items]
Restricted shares, vesting period		4 years
Director [Member]
Class of Stock [Line Items]
Restricted shares, vesting period		12 months
Dividend Reinvestment Plan [Member]
Class of Stock [Line Items]
Shares authorized per plan		330,750
2014 Restricted Stock Plan [Member]
Class of Stock [Line Items]
Aggregate shares granted		200,000
Shares granted		118,069
Allocated share-based compensation expense		$ 168,000	$ 132,000
Shares forfeited and available for reissuance		5,073
Restricted shares vested during period		65,874
Granted shares unvested		47,122
Shares forfeited			0
Underwritten Public Offering [Member]
Class of Stock [Line Items]
Number of shares issued	2,990,000
Common stock, price per share	$ 25.00
Net proceeds received after underwriting discount and other estimated offering expenses	$ 70,238,000
Net proceeds of the offering	4,512,000
Aggregate gross proceeds of offering	$ 74,750,000
Treasury Stock Repurchase Program [Member]
Class of Stock [Line Items]
Stock repurchase program, authorized amount		$ 15,000,000
Percentage of issued shares based on closing stock price		3.50%
Stock repurchased during period, shares		98,452		98,452
Stock repurchased at average price per share		$ 19.53		$ 19.53