PRE TAX EXPENSE (Details 1) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock based award expense		$ 4,225	$ 3,333	$ 2,965
Related tax benefits recognized in earnings		1,188	1,362	1,211
Stock options [Member] | Director [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock based award expense		66	76	72
Restricted stock awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock based award expense	[1]	3,299	2,730	2,590
Restricted stock awards [Member] | Director [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock based award expense		$ 860	$ 527	$ 303

[1] Inclusive of compensation expense associated with time-vested and performance-based restricted stock awards.