NET INCOME PER SHARE (Details) - shares	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Reconciliation from basic to diluted weighted average common shares outstanding
Basic weighted-average shares of common stock outstanding	16,195,000	16,145,000	16,176,000	16,118,000
Stock options (in shares)	79,000		87,000	103,000
Diluted weighted-average shares of common stock outstanding	16,274,000	16,145,000	16,263,000	16,221,000
Anti-dilutive potential shares excluded from the computation of diluted weighted average shares outstanding (in shares)	5,000	5,000	5,000	5,000