EARNINGS PER SHARE - Summary of shares used in computing diluted earnings per share (Details) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Diluted earnings per share:
Weighted average shares outstanding	13,245	13,010	13,175	13,020
Employee and director stock options	18		13
Weighted average shares assuming dilution	13,263	13,010	13,188	13,020