STOCKHOLDERS' EQUITY (Schedule of Accumulated Other Comprehensive Income) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		12 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Dec. 31, 2012
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance, beginning of period	$ 45,259	$ 16,066	$ 16,066
Other comprehensive income (loss) before reclassifications	(4,773)	10,189
Amounts reclassified from accumulated other comprehensive income (loss)	5	(339)
Net current period other comprehensive income (loss)	(4,768)	9,850	29,193
Balance, end of period	40,491	25,916	45,259
Investment Securities [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance, beginning of period	35,186	19,437	19,437
Other comprehensive income (loss) before reclassifications	(2,681)	6,718
Amounts reclassified from accumulated other comprehensive income (loss)	5	(339)
Net current period other comprehensive income (loss)	(2,676)	6,379
Balance, end of period	32,510	25,816
Defined Benefit Pension Plan [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance, beginning of period	(3,544)	(2,633)	(2,633)
Other comprehensive income (loss) before reclassifications	30	21
Amounts reclassified from accumulated other comprehensive income (loss)	0	0
Net current period other comprehensive income (loss)	30	21
Balance, end of period	(3,514)	(2,612)
Deferred Tax Asset Valuation Allowance [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance, beginning of period	13,617	(738)	(738)
Other comprehensive income (loss) before reclassifications	(2,122)	3,450
Amounts reclassified from accumulated other comprehensive income (loss)	0	0
Net current period other comprehensive income (loss)	(2,122)	3,450
Balance, end of period	$ 11,495	$ 2,712