Consolidated Statement of Shareholders’ Equity - USD ($) shares in Thousands	Common Stock and Additional Paid in Capital [Member]	Retained Earnings [Member]	Total
BALANCE - December 31, 20 at Dec. 31, 2018	$ 68,387,000	$ 83,188,000	$ 151,575,000
BALANCE - December 31, 20 (in Shares) at Dec. 31, 2018	7,368
Net income (Loss)		3,605,000	3,605,000
Dividends paid on common stock		(886,000)	(886,000)
Stock issued and options exercised including related tax benefits	$ 294,000		294,000
Stock issued and options exercised including related tax benefits (in Shares)	17
Stock compensation expense	$ 168,000		168,000
Stock compensation expense (in Shares)	6
BALANCE - December 31, 20 at Mar. 31, 2019	$ 68,849,000	85,907,000	154,756,000
BALANCE - December 31, 20 (in Shares) at Mar. 31, 2019	7,391
BALANCE - December 31, 20 at Dec. 31, 2019	$ 67,993,000	96,663,000	164,656,000
BALANCE - December 31, 20 (in Shares) at Dec. 31, 2019	7,355
Net income (Loss)		1,188,000	1,188,000
Dividends paid on common stock		(1,030,000)	(1,030,000)
Repurchase of common stock	$ (1,000,000)		(1,000,000)
Repurchase of common stock (in Shares)	(50)
Stock compensation expense	$ 202,000		202,000
Stock compensation expense (in Shares)	4
BALANCE - December 31, 20 at Mar. 31, 2020	$ 67,195,000	$ 96,821,000	$ 164,016,000
BALANCE - December 31, 20 (in Shares) at Mar. 31, 2020	7,309