PRE TAX EXPENSE (Details 1) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock based award expense		$ 2,965	$ 2,490	$ 2,712
Related tax benefits recognized in earnings		1,211	1,122	945
Stock options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock based award expense		0	0	36
Stock options [Member] | Director [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock based award expense		72	0	14
Restricted stock awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock based award expense	[1]	2,590	2,296	2,135
Restricted stock awards [Member] | Director [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock based award expense		$ 303	$ 194	$ 527

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