EARNINGS PER SHARE (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Basic earnings per share computation:
Net income	$ 4,020	$ 4,250	$ 10,103	$ 8,744
Less income allocated to participating awards	26	56	74	120
Net income applicable to common shareholders	3,994	4,194	10,029	8,624
Weighted average common shares outstanding	11,567,000	11,467,000	11,551,000	11,461,000
Basic earnings per share (in dollars per share)	$ 0.35	$ 0.37	$ 0.87	$ 0.75
Diluted earnings per share computation:
Net income	4,020	4,250	10,103	8,744
Less income allocated to participating awards	26	56	74	120
Net income applicable to common shareholders	$ 3,994	$ 4,194	$ 10,029	$ 8,624
Weighted average common shares outstanding	11,567,000	11,467,000	11,551,000	11,461,000
Assumed exercise of stock options (in shares)	23,000	25,000	24,000	26,000
Assumed satisfaction of RSA conditions (in shares)	16,000	1,000	13,000
Assumed satisfaction of PSI conditions (in shares)		40,000		40,000
Weighted average common shares outstanding	11,606,000	11,533,000	11,588,000	11,527,000
Diluted earnings per share (in dollars per share)	$ 0.34	$ 0.36	$ 0.87	$ 0.75
Anti-dilutive stock-based awards excluded from calculation of diluted earnings per share (in shares)	133,085	186,753	149,285	175,225