Significant Accounting Policies (Additional Cash Flow Information) (Details) (USD $) In Thousands	6 Months Ended
Jun. 30, 2011	Jun. 30, 2010
Significant Accounting Policies
Cash paid for interest	$ 24,473	$ 30,027
Cash paid for income tax	12,406	27,979
Loans foreclosed and transferred to other real estate owned and foreclosed assets	13,553	10,793
Loans to facilitate the sale of other real estate owned		785
Common stock/treasury stock issued to the Corporation's 401(k) stock purchase plan	$ 1,360	$ 5,318

Value of real estate transferred in noncash transactions during the reporting period.

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- Definition

The amount of cash paid during the current period to foreign, federal, state, and local authorities as taxes on income.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 95
-Paragraph 29

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 95
-Paragraph 27
-Subparagraph f

+ Details

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- Definition

The amount of cash paid during the current period for interest owed on money borrowed; includes amount of interest capitalized

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 95
-Paragraph 29

+ Details

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- Definition

Mortgage loan related to property sales in noncash investing and financing activities.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 95
-Paragraph 32

+ Details

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- Definition

The fair value of stock issued in noncash financing activities.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 95
-Paragraph 32

+ Details

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