Mergers And Acquisitions (Schedule Of Acquired Identifiable Assets And Liabilities Assumed) (Detail) (USD $) In Thousands, unless otherwise specified	Jul. 08, 2011
Value of common shares issued (6,548,473 shares)	$ 161,420
Cash for stock options and fractional shares	8,576
Total purchase price	169,996
Cash and cash equivalents	57,661
Investment securities	128,078
Loans held for sale	2,062
Loans	1,016,102
Premises and equipment	20,126
Core deposit intangibles	12,439
Other assets	53,656
Total identifiable assets	1,290,124
Deposits	1,132,885
Short-term borrowings	28,566
Long-term borrowings	19,436
Other liabilities	3,273
Total identifiable liabilities	1,184,160
Net assets acquired including identifiable intangible assets	105,964
Resulting goodwill	$ 64,032