STOCK OPTION ROLLFORWARD (Details 5) - USD ($) $ / shares in Units, $ in Thousands		12 Months Ended
		Dec. 31, 2020		Dec. 31, 2019	Dec. 31, 2018
Stock Option Awards, Outstanding (in shares):
Granted		0		0
Stock Option Awards, Nonvested (in shares)
Granted		0		0
Stock options [Member]
Stock Option Awards, Outstanding (in shares):
Balance outstanding at beginning of period		38,500
Granted		0
Exercised		(10,000)
Forfeited		0
Expired		0
Balance outstanding at end of period		28,500	[1]	38,500
Options outstanding, vested, and exercisable at December 31, 2020	[1]	28,500
Weighted Average Exercise Price, Outstanding (in usd per share):
Balance outstanding at beginning of period		$ 42.49
Granted		0
Exercised		27.90
Forfeited		0
Expired		0
Balance outstanding at end of period		47.61		$ 42.49
Options outstanding, vested, and exercisable at December 31, 2020		$ 47.61
Balance at December 31, 2020, Weighted average remaining contractual term (years)		3 years 11 months 26 days
Options outstanding and expected to vest at December 31, 2020, Weighted Average Remaining Contractual Term (years)		3 years 11 months 26 days
Balance at December 31, 2020, Aggregate Intrinsic Value	[2]	$ 704
Options outstanding and expected to vest at December 31, 2020, Aggregate Intrinsic Value	[2]	$ 704
Stock Option Awards, Nonvested (in shares)
Balance nonvested at beginning of period		1,666
Granted		0
Vested		(1,666)
Forfeited		0
Expired		0
Balance nonvested at end of period		0		1,666
Weighted Average Grant Date Fair Value, Nonvested (in dollars per share):
Balance nonvested at beginning of period		$ 13.46
Granted		0			$ 13.46
Vested		13.46
Forfeited		0
Expired		0
Balance nonvested at end of period		$ 0		$ 13.46

[1] Inclusive of 20,000 vested stock options outstanding to Directors.

[2] The aggregate intrinsic value represents the total pre-tax intrinsic value, based on the average of the high price and low price at which the Company’s common stock traded on December 31, 2020 of $72.33, which would have been received by in-the-money option holders had they all exercised their options as of that date.