Subsequent Events (Narrative) (Details) - Subsequent Event [Member] - USD ($)	May 04, 2021	Apr. 29, 2021	Apr. 28, 2021
Extension of Treasury Stock Repurchase Program [Member]
Subsequent Event [Line Items]
Stock repurchase program, authorized amount			$ 15,000,000
Stock repurchase program, remaining authorized amount			$ 13,077,000
Stock repurchase program expiration date			Mar. 19, 2020
Stock repurchase program extended expiration date			Mar. 19, 2022
Underwritten Public Offering [Member]
Subsequent Event [Line Items]
Common stock offering		$ 65,000,000
Number of shares issued	2,990,000	2,600,000
Common stock, price per share	$ 25.00	$ 25.00
Net proceeds received after underwriting discount and other estimated offering expenses	$ 70,200,000
Underwriters option to purchase additional shares of common stock, period		30 days
Percentage of underwriters option to purchase additional shares of common stock		15.00%
Underwriters option to purchase additional shares of common stock	390,000	390,000
Number of shares issued upon exercise of underwriters option to purchase additional shares	390,000
Aggregate gross proceeds of offering	$ 74,750,000