Consolidated Statement of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Operating activities:
Net Income	$ 25,123	$ 29,636
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for loan losses	4,559	2,680
Depreciation of premises and equipment, net	3,054	2,982
Amortization of fees and discounts, net	7,173	4,552
Amortization of intangible assets	787	546
Increase in accrued interest receivable	(490)	(206)
Decrease in other assets	271	220
Origination of loans held-for-sale	(185,543)	(105,844)
Proceeds from sales of loans held-for-sale	168,397	101,976
Gain on mortgage banking activities, net	(3,293)	(1,837)
Gain on sale of securities, net	(928)	(943)
Stock-based compensation expense	2,345	2,242
Excess tax benefit from stock-based compensation	(681)	(478)
Increase in accrued interest payable	875	1,543
Increase (decrease) in other liabilities	1,582	(788)
Loss on sale of assets acquired through foreclosure and valuation adjustments, net	201	56
Deferred income tax expense (benefit)	1,836	(5,722)
Increase in value of bank-owned life insurance	(430)	(282)
Increase in capitalized interest, net	(2,405)	(2,785)
Net cash provided by operating activities	22,433	27,548
Investing activities:
Calls of investment securities held to maturity	3,486
Maturities of investment securities available for sale		2,305
Sale of investment securities available-for-sale	84,529	141,439
Purchases of investment securities available-for-sale	(185,463)	(168,454)
Repayments of investment securities available-for-sale	55,084	27,177
Repayments on reverse mortgages	6,196	8,235
Disbursements for reverse mortgages	(438)	(665)
Net increase in loans	(149,214)	(93,558)
Net increase in stock of FHLB	(8,554)	(1,718)
Sales of assets acquired through foreclosure, net	3,081	3,222
Investment in premises and equipment, net	(2,884)	(1,388)
Net cash used for investing activities	(194,177)	(83,405)
Financing activities:
Net decrease in demand and saving deposits	(38,091)	(65,036)
Decrease in time deposits	(77,906)	(6,635)
(Decrease) increase in brokered deposits	(3,336)	31,732
Increase in loan payable	41	40
Repayment of reverse mortgage trust bonds payable		(21,990)
Receipts from FHLB advances	14,455,050	57,176,960
Repayments of FHLB advances	(14,435,200)	(57,056,651)
Receipts from federal funds purchased and securities sold under agreement to repurchase	30,479,478	12,259,350
Repayments of federal funds purchased and securities sold under agreement to repurchase	(30,169,691)	(12,270,350)
Dividends paid	(2,823)	(2,141)
Issuance of common stock and exercise of common stock options	1,845	863
Purchase of treasury stock	(12,652)
Excess tax benefit from stock-based compensation	681	478
Net cash provided by financing activities	197,396	46,620
Decrease in cash and cash equivalents	25,652	(9,237)
Cash and cash equivalents at beginning of period	508,039	484,426
Cash and cash equivalents at end of period	533,691	475,189
Supplemental Disclosure of Cash Flow Information:
Cash paid for interest during the period	7,124	6,134
Cash paid for income taxes, net	10,471	12,231
Loans transferred to assets acquired through foreclosure	2,452	3,196
Loans transferred to portfolio from held-for-sale at fair value	171	2,169
Net change in accumulated other comprehensive income	(2,271)	18,299
Non-cash goodwill adjustments, net	$ 336	$ 135