Quarterly report pursuant to Section 13 or 15(d)

FAIR VALUE MEASUREMENT (Financial Assets And Financial Liabilities Carried At Fair Value On A Recurring Basis) (Detail)

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FAIR VALUE MEASUREMENT (Financial Assets And Financial Liabilities Carried At Fair Value On A Recurring Basis) (Detail) (USD $)
In Thousands, unless otherwise specified
Mar. 31, 2013
Dec. 31, 2012
Available-for-sale securities: $ 229,434 $ 233,877
Derivative assets 296  
Fair Value Measurements Recurring [Member]
   
Derivative liabilities 0  
Fair Value Measurements Recurring [Member] | Us Treasury and Government [Member]
   
Available-for-sale securities: 27,815 28,386
Fair Value Measurements Recurring [Member] | Collateralized Mortgage Backed Securities [Member]
   
Available-for-sale securities: 66,476 118,177
Fair Value Measurements Recurring [Member] | Us States and Political Subdivisions Debt Securities [Member]
   
Available-for-sale securities: 122,303 73,466
Fair Value Measurements Recurring [Member] | Corporate Debt Securities [Member]
   
Available-for-sale securities: 12,840 13,848
Fair Value Measurements Recurring [Member] | Interest Rate Swap [Member]
   
Available-for-sale securities:   389
Derivative assets 296 234,266
Derivative liabilities   389
Fair Value Measurements Recurring [Member] | Interest Rate Cap [Member]
   
Derivative assets 229,730  
Fair Value Measurements Recurring [Member] | Fair Value Inputs Level 2 [Member] | Us Treasury and Government [Member]
   
Available-for-sale securities: 27,815 28,386
Fair Value Measurements Recurring [Member] | Fair Value Inputs Level 2 [Member] | Collateralized Mortgage Backed Securities [Member]
   
Available-for-sale securities: 66,476 73,466
Fair Value Measurements Recurring [Member] | Fair Value Inputs Level 2 [Member] | Us States and Political Subdivisions Debt Securities [Member]
   
Available-for-sale securities: 122,303 13,848
Fair Value Measurements Recurring [Member] | Fair Value Inputs Level 2 [Member] | Corporate Debt Securities [Member]
   
Available-for-sale securities: 12,840 118,177
Fair Value Measurements Recurring [Member] | Fair Value Inputs Level 2 [Member] | Interest Rate Swap [Member]
   
Available-for-sale securities:   389
Derivative assets 296 234,266
Derivative liabilities   389
Fair Value Measurements Recurring [Member] | Fair Value Inputs Level 2 [Member] | Interest Rate Cap [Member]
   
Derivative assets $ 229,730