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Condensed Consolidated Statements of Cash Flows (Unaudited) (USD $) In Thousands, unless otherwise specified | 9 Months Ended
--- | ---
Sep. 30, 2012 | Sep. 30, 2011
Operating Activities |  |
Net income | $ 33,219 | $ 20,991
Adjustment to reconcile net income to net cash provided by operating activities: |  |
Provision for credit losses | 14,838 | 29,904
Deferred tax expense | 2,507 | 1,387
Depreciation and amortization | 5,736 | 7,058
Net (gains) losses on securities and other assets | (1,392) | 5,861
Net amortization of premiums and discounts on securities | 1,075 | 794
Net accretion of premiums and discounts on long-term debt | (84) | (96)
Income from increase in cash surrender value of bank owned life insurance | (4,369) | (4,158)
Decrease in interest receivable | 1,426 | 1,063
Decrease in interest payable | (2,087) | (1,921)
Increase (decrease) in income taxes payable | 6,294 | (718)
Other-net | (2,567) | (1,222)
Net cash provided by operating activities | 54,596 | 58,943
Transactions with securities available for sale: |  |
Proceeds from sales | 0 | 75,074
Proceeds from maturities and redemptions | 410,909 | 358,875
Purchases | (395,337) | (489,963)
Proceeds from the redemption of FHLB stock | 7,317 | 6,969
Proceeds from bank owned life insurance | 2,071 | 88
Proceeds from sale of loans | 15,981 | 5,763
Proceeds from sales of other assets | 15,301 | 7,037
Purchases of premises and equipment | (6,468) | (6,542)
Net (increase) decrease in loans | (185,018) | 184,440
Net cash (used in) provided by investing activities | (135,244) | 141,741
Financing Activities |  |
Net decrease in federal funds purchased | (54,800) | (800)
Net increase (decrease) in other short-term borrowings | 203,792 | (13,281)
Net decrease in deposits | (10,206) | (132,912)
Repayments of other long-term debt | (25,358) | (24,444)
Proceeds from issuance of common stock | 0 | 144
Discount on dividend reinvestment plan purchases | (67) | (48)
Dividends paid | (13,633) | (9,418)
Proceeds from reissuance of treasury stock | 617 | 72
Purchase of treasury stock | (9,112) | (9)
Stock option tax benefit | 1 | 0
Net cash provided by (used in) financing activities | 91,234 | (180,696)
Net increase in cash and cash equivalents | 10,586 | 19,988
Cash and cash equivalents at January 1 | 78,478 | 69,858
Cash and cash equivalents at September 30 | $ 89,064 | $ 89,846

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- Definition The cash outflow associated with the 5% discount on the shares issued during the period from a dividend reinvestment plan (DRIP). A dividend reinvestment plan allows the shareholders to reinvest dividends paid to them by the entity on new issues of stock by the entity. + References No definition available. + Details
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- Definition The cash outflow attributable to repayments of borrowings not otherwise defined in the taxonomy (with maturities initially due after one year or beyond the operating cycle if longer). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 18 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6943989&loc=d3e3291-108585 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 20 -Subparagraph b -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration