EARNINGS PER SHARE (Reconciliation) (Details) - shares shares in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Earnings Per Share [Abstract]
Basic shares outstanding (in shares)	20,835	22,867	20,722	22,915
Dilutive effect of outstanding director units and stock options (in shares)	0	268	283	271
Diluted shares outstanding (in shares)	20,835	23,135	21,005	23,186
Antidilutive securities excluded from computation (in shares)				289