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STOCKHOLDERS' EQUITY - Stock Repurchase Program (Details) - USD ($)	3 Months Ended			9 Months Ended
	Sep. 30, 2022	Jun. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Stock Repurchase Program
Repurchases of common stock - net	$ 1,822,000	$ 3,418,000
Stock Repurchase Program
Stock Repurchase Program
Value of common shares authorized for repurchase	$ 7,500,000			$ 7,500,000
Number of shares repurchased	75,000		0	208,000	0
Repurchases of common stock - net	$ 1,822,000			$ 5,214,000
Payment of commissions on sale of shares	5,000			12,000
Stock Repurchase Program, September 2022
Stock Repurchase Program
Value of common shares authorized for repurchase	7,500,000			7,500,000
Stock Repurchase Program, March 2016
Stock Repurchase Program
Remaining value of common shares authorized for repurchase	$ 2,286,000			$ 2,286,000

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