BANNER CORPORATION AND SUBSIDIARIES - CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Net income (loss)	$ 5,457	$ (61,896)	$ (35,764)
OTHER COMPREHENSIVE INCOME (LOSS), NET OF INCOME TAXES:
Unrealized holding gain (loss) during the period, net	1,685	59	(377)
Amortization of unrealized gain on tax exempt securities transferred from available- for-sale to held-to-maturity	16	42	54
Other comprehensive income (loss)	1,701	101	(323)
COMPREHENSIVE INCOME (LOSS)	$ 7,158	$ (61,795)	$ (36,087)