Consolidated Statements of Cash Flows (Unaudited) (USD $)	3 Months Ended		9 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Dec. 31, 2012
OPERATING ACTIVITIES
Net income	$ 5,937,000	$ 6,355,000	$ 21,329,000
Items not requiring (providing) cash:
Depreciation and amortization	1,460,000	1,372,000
Provision for loan losses	919,000	771,000
Net amortization (accretion) of investment securities and assets not covered by FDIC loss share	69,000	(5,000)
Stock-based compensation expense	336,000	402,000
Net accretion on assets covered by FDIC loss share	(1,196,000)	(901,000)
Deferred income taxes	(1,276,000)	1,149,000
Bank owned life insurance income	(278,000)	(355,000)
Changes in:
Interest receivable	1,503,000	1,807,000
Mortgage loans held for sale	6,267,000	(1,375,000)
Assets held in trading accounts	(2,144,000)	(167,000)
Other assets	1,149,000	(139,000)
Accrued interest and other liabilities	(1,818,000)	(213,000)
Income taxes payable	3,517,000	1,527,000
Net cash provided by operating activities	14,445,000	10,228,000
INVESTING ACTIVITIES
Net collections (originations) of loans	37,103,000	30,379,000
Net collections of loans covered by FDIC loss share	30,648,000	28,418,000
Purchases of premises and equipment, net	(1,701,000)	(596,000)
Proceeds from sale of foreclosed assets held for sale	8,128,000	1,528,000
Proceeds from sale of foreclosed assets held for sale, covered by FDIC loss share	2,853,000	3,508,000
Proceeds from sale of available-for-sale securities	480,000	3,000
Proceeds from maturities of available-for-sale securities	15,065,000	79,367,000
Purchases of available-for-sale securities	(16,892,000)	(83,677,000)
Proceeds from maturities of held-to-maturity securities	42,282,000	202,643,000
Purchases of held-to-maturity securities	(34,615,000)	(158,506,000)
Purchase of bank owned life insurance	(7,000,000)
Cash received on FDIC loss share	5,219,000	4,017,000
Net cash provided by investing activities	81,570,000	107,084,000
FINANCING ACTIVITIES
Net change in deposits	18,501,000	4,180,000
Dividends paid	(3,469,000)	(3,443,000)
Net change in other borrowed funds	(7,795,000)	142,000
Net change in federal funds purchased and securities sold under agreements to repurchase	4,149,000	(8,542,000)
Net shares issued under stock compensation plans	202,000	190,000
Repurchase of common stock	(2,402,000)	(2,052,000)
Net cash provided by (used in) financing activities	9,186,000	(9,525,000)
INCREASE IN CASH AND CASH EQUIVALENTS	105,201,000	107,787,000
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD	537,797,000	570,206,000	677,993,000
CASH AND CASH EQUIVALENTS, END OF PERIOD	$ 642,998,000	$ 677,993,000	$ 537,797,000