5. FAIR VALUE MEASUREMENTS - Loans on nonrecurring basis (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Dec. 31, 2013
Total assets measured at fair value on a nonrecurring basis	$ 1,589		$ 1,589		$ 4,032
Total losses measured at fair value on a nonrecurring basis	288	750	473	1,774	1,668
Level 1
Total assets measured at fair value on a nonrecurring basis	0		0		0
Level 2
Total assets measured at fair value on a nonrecurring basis	0		0		0
Level 3
Total assets measured at fair value on a nonrecurring basis	1,589		1,589		4,032
Impaired loans - commercial
Total assets measured at fair value on a nonrecurring basis	0		0		157
Total losses measured at fair value on a nonrecurring basis	124	(198)	78	88	63
Impaired loans - commercial | Level 1
Total assets measured at fair value on a nonrecurring basis	0		0		0
Impaired loans - commercial | Level 2
Total assets measured at fair value on a nonrecurring basis	0		0		0
Impaired loans - commercial | Level 3
Total assets measured at fair value on a nonrecurring basis	0		0		157
Impaired Real estate - commercial
Total assets measured at fair value on a nonrecurring basis	112		112		593
Total losses measured at fair value on a nonrecurring basis	(2)	0	(24)	239	239
Impaired Real estate - commercial | Level 1
Total assets measured at fair value on a nonrecurring basis	0		0		0
Impaired Real estate - commercial | Level 2
Total assets measured at fair value on a nonrecurring basis	0		0		0
Impaired Real estate - commercial | Level 3
Total assets measured at fair value on a nonrecurring basis	112		112		593
Impaired Real estate - construction
Total assets measured at fair value on a nonrecurring basis	0		0		110
Total losses measured at fair value on a nonrecurring basis	0	0	0	0	71
Impaired Real estate - construction | Level 1
Total assets measured at fair value on a nonrecurring basis	0		0		0
Impaired Real estate - construction | Level 2
Total assets measured at fair value on a nonrecurring basis	0		0		0
Impaired Real estate - construction | Level 3
Total assets measured at fair value on a nonrecurring basis	0		0		110
Impaired Real estate - mortgage
Total assets measured at fair value on a nonrecurring basis	1,140		1,140		291
Total losses measured at fair value on a nonrecurring basis	82	186	299	272	42
Impaired Real estate - mortgage | Level 1
Total assets measured at fair value on a nonrecurring basis	0		0		0
Impaired Real estate - mortgage | Level 2
Total assets measured at fair value on a nonrecurring basis	0		0		0
Impaired Real estate - mortgage | Level 3
Total assets measured at fair value on a nonrecurring basis	1,140		1,140		291
ImpairedOther
Total assets measured at fair value on a nonrecurring basis	144		144		164
Total losses measured at fair value on a nonrecurring basis	0	140	36	177	71
ImpairedOther | Level 1
Total assets measured at fair value on a nonrecurring basis	0		0		0
ImpairedOther | Level 2
Total assets measured at fair value on a nonrecurring basis	0		0		0
ImpairedOther | Level 3
Total assets measured at fair value on a nonrecurring basis	144		144		164
Other real estate owned Commercial
Total assets measured at fair value on a nonrecurring basis	0		0		570
Total losses measured at fair value on a nonrecurring basis	0	104	0	123	57
Other real estate owned Commercial | Level 1
Total assets measured at fair value on a nonrecurring basis	0		0		0
Other real estate owned Commercial | Level 2
Total assets measured at fair value on a nonrecurring basis	0		0		0
Other real estate owned Commercial | Level 3
Total assets measured at fair value on a nonrecurring basis	0		0		570
Other real estate owned Construction
Total assets measured at fair value on a nonrecurring basis	78		78		2,147
Total losses measured at fair value on a nonrecurring basis	5	518	5	518	1,125
Other real estate owned Construction | Level 1
Total assets measured at fair value on a nonrecurring basis	0		0		0
Other real estate owned Construction | Level 2
Total assets measured at fair value on a nonrecurring basis	0		0		0
Other real estate owned Construction | Level 3
Total assets measured at fair value on a nonrecurring basis	78		78		2,147
Other real estate owned Mortgage
Total assets measured at fair value on a nonrecurring basis	115		115
Total losses measured at fair value on a nonrecurring basis	79	0	79	0
Other real estate owned Mortgage | Level 1
Total assets measured at fair value on a nonrecurring basis	0		0
Other real estate owned Mortgage | Level 2
Total assets measured at fair value on a nonrecurring basis	0		0
Other real estate owned Mortgage | Level 3
Total assets measured at fair value on a nonrecurring basis	$ 115		$ 115