SECURITIES - Aggregate fair value and gross unrealized loss of securities (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Less than 12 Months, Fair value
Available-for-sale
Municipal bonds	$ 839	$ 20
Mortgage backed securities	3,021	19
Non-agency	612	2
Total temporarily impaired securities	4,472	41
Non-agency	535	6
Total temporarily and other-than-temporarily impaired securities	5,007	47
Gross un-realized gains
Available-for-sale
Municipal bonds	2,360	148
Mortgage backed securities	44	1
Non-agency	901	17
Total temporarily impaired securities	3,305	166
Non-agency	1,963	43
Total temporarily and other-than-temporarily impaired securities	5,268	209
12 Months or Longer, Fair value
Available-for-sale
Municipal bonds	3,199	168
Mortgage backed securities	3,065	20
Non-agency	1,513	19
Total temporarily impaired securities	7,777	207
Non-agency	2,498	49
Total temporarily and other-than-temporarily impaired securities	10,275	256
12 Months or Longer, Unrealized losses
Available-for-sale
Municipal bonds
Mortgage backed securities	14,881	18
Non-agency	2,129	113
Total temporarily impaired securities	17,010	131
Non-agency	2,585	93
Total temporarily and other-than-temporarily impaired securities	19,595	224
Total, Fair value
Available-for-sale
Municipal bonds	11,526	1,152
Mortgage backed securities	56	1
Non-agency	1,074	134
Total temporarily impaired securities	12,656	1,287
Non-agency	1,559	148
Total temporarily and other-than-temporarily impaired securities	14,215	1,435
Total, Unrealized losses
Available-for-sale
Municipal bonds	11,526	1,152
Mortgage backed securities	14,937	19
Non-agency	3,203	247
Total temporarily impaired securities	29,666	1,418
Non-agency	4,144	241
Total temporarily and other-than-temporarily impaired securities	$ 33,810	$ 1,659