STOCK OPTION ROLLFORWARD (Details 5) - Stock options [Member] - USD ($) $ / shares in Units, $ in Thousands		12 Months Ended
		Dec. 31, 2017		Dec. 31, 2016	Dec. 31, 2015
Stock Option Awards, Outstanding (in shares):
Balance outstanding at beginning of period		109,650
Granted		5,000
Exercised		(30,150)
Forfeited		0
Expired		(500)
Balance outstanding at end of period		84,000	[1]	109,650
Options outstanding and expected to vest at December 31, 2017	[2]	84,000
Options exercisable at December 31, 2017	[3]	79,001
Weighted Average Exercise Price, Outstanding (in usd per share):
Balance outstanding at beginning of period		$ 29.93
Granted		70.28
Exercised		30.43
Forfeited		0.00
Expired		28.88
Balance outstanding at end of period		32.16		$ 29.93
Options outstanding and expected to vest at December 31, 2017		32.16
Options exercisable at December 31, 2017		$ 30.21
Balance at December 31, 2016, Weighted average remaining contractual term (years)		3 years 16 days
Options outstanding and expected to vest at December 31, 2016, Weighted Average Remaining Contractual Term (years)		3 years 16 days
Options exercisable at December 31, 2016, Weighted Average Remaining Contractual Term (years)		2 years 7 months 20 days
Balance at December 31, 2016, Aggregate Intrinsic Value	[4]	$ 3,258
Options outstanding and expected to vest at December 31, 2016, Aggregate Intrinsic Value	[4]	3,258
Options exercisable at December 31, 2016, Aggregate Intrinsic Value	[4]	$ 3,218
Stock Option Awards, Nonvested (in shares)
Balance nonvested at beginning of period		6,666
Granted		5,000
Vested		(6,667)
Forfeited		0
Expired		0
Balance nonvested at end of period		4,999		6,666
Weighted Average Grant Date Fair Value, Nonvested (in dollars per share):
Balance nonvested at beginning of period		$ 11.03
Granted		12.43		$ 11.03	$ 0.00
Vested		10.85
Forfeited		0.00
Expired		0
Balance nonvested at end of period		$ 12.11		$ 11.03
Unrecognized compensation cost		$ 22
Weighted average remaining recognition period (years)		1 year

[1] Inclusive of 38,000 stock options outstanding to Directors.

[2] Inclusive of 38,000 vested stock options and expected to vest to Directors.

[3] Inclusive of 33,001 vested stock options outstanding to Directors.

[4] The aggregate intrinsic value in the preceding tables 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, 2017 of $70.95, which would have been received by the option holders had they all exercised their options as of that date.