PER SHARE DATA (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended												12 Months Ended
	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2010	Sep. 30, 2010	Jun. 30, 2010	Mar. 31, 2010	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Basic (loss) earnings per share [Abstract]
Net income (loss)	$ (4,504)	$ (886)	$ (1,239)	$ 9	$ (1,825)	$ (4,536)	$ 313	$ 2,167	$ 2,020	$ 1,923	$ 2,347	$ 1,763	$ (6,620)	$ (3,881)	$ 8,053
Weighted average shares outstanding													6,943	6,927	6,622
Basic (loss) earnings per share (in dollars per share)	$ (0.65)	$ (0.13)	$ (0.18)	$ 0.00	$ (0.26)	$ (0.67)	$ 0.05	$ 0.31	$ 0.30	$ 0.28	$ 0.36	$ 0.27	$ (0.95)	$ (0.56)	$ 1.22
Diluted earnings per share [Abstract]
Net income (loss)	$ (4,504)	$ (886)	$ (1,239)	$ 9	$ (1,825)	$ (4,536)	$ 313	$ 2,167	$ 2,020	$ 1,923	$ 2,347	$ 1,763	$ (6,620)	$ (3,881)	$ 8,053
Weighted average shares outstanding													6,943	6,927	6,622
Add dilutive effect of assumed exercising of stock options													0	0	44
Diluted weighted average shares outstanding													6,943	6,927	6,666
Diluted (loss) earnings per share (in dollars per share)	$ (0.65)	$ (0.13)	$ (0.18)	$ 0.00	$ (0.26)	$ (0.67)	$ 0.05	$ 0.31	$ 0.29	$ 0.28	$ 0.36	$ 0.27	$ (0.95)	$ (0.56)	$ 1.21