PRE TAX EXPENSE (Details 1) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock based award expense		$ 2,489	$ 2,712	$ 2,462
Related tax benefits recognized in earnings		1,122	945	832
Stock options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock based award expense		0	36	241
Stock options [Member] | Director [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock based award expense		0	14	27
Restricted stock awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock based award expense	[1]	2,295	2,135	1,906
Restricted stock awards [Member] | Director [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock based award expense		$ 194	$ 527	$ 288

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