SIGNIFICANT ACCOUNTING POLICIES Earnings Per Share Reconciliation (Details) - shares	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Weighted average shares outstanding - basic	37,345,985	37,323,575	36,994,969	36,928,283
Effect of dilutive employee and director share-based awards	29,288	61,906	27,378	0
Weighted average shares outstanding - diluted	37,375,273	37,385,481	37,022,347	36,928,283
Stock Options
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Anti-dilutive stock options outstanding	358,741	435,991	351,074	435,991
Restricted stock
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Anti-dilutive stock options outstanding	0	0	332,134	365,432