Note 10 - Income Taxes (Tables)

12 Months Ended

Dec. 31, 2012

Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]

	2012			2011		2010
	(In thousands)
Federal:
Current	$	17,330		$	17,314	$	18,205
Deferred		(590	)		435		1,138
Total federal tax provision		16,740			17,749		19,343
State and Local:
Current		5,321			5,470		5,777
Deferred		(214	)		250		(9,179	)
Total state and local tax provision		5,107			5,720		(3,402	)
Total income tax provision	$	21,847		$	23,469	$	15,941

Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]

	2012					2011					2010
	(Dollars in thousands)
Taxes at federal statutory rate	$	19,662		35.0	%	$	20,586		35.0	%	$	19,172		35.0	%
Increase (reduction) in taxes resulting from:
State and local income tax, net of Federal income tax benefit		3,320		5.9			3,718		6.3			(2,211	)	(4.0	)
Other		(1,135	)	(2.0	)		(835	)	(1.4	)		(1,020	)	(1.9	)
Taxes at effective rate	$	21,847		38.9	%	$	23,469		39.9	%	$	15,941		29.1	%

Schedule of Components of the Income Taxes Attributable to Income From Operations and Changes in Equity [Table Text Block]

	2012			2011			2010
	(In thousands)
Income from operations	$	21,847		$	23,469		$	15,941
Equity:
Change in fair value of securities available for sale		5,577			8,398			2,714
Current year actuarial losses of postretirement plans		(340	)		(1,932	)		(513	)
Amortization of net actuarial losses and prior service credits		436			223			120
Compensation expense for tax purposes in (excess) or less than that recognized for financial reporting purposes		303			(292	)		(12	)
Total income taxes	$	27,823		$	29,866		$	18,250

Schedule of Deferred Tax Assets and Liabilities [Table Text Block]

	2012			2011
	(In thousands)
Deferred tax asset:
Postretirement benefits	$	4,114		$	3,658
Allowance for loan losses		13,592			13,305
Stock based compensation		2,373			1,942
Depreciation		1,212			1,041
Fair value adjustment on financial assets carried at fair value		3,152			4,024
Other-than-temporary impairment charges		2,700			3,035
Adjustment required to recognize funded status of postretirement pension plans		5,266			5,362
Other		1,991			1,871
Deferred tax asset		34,400			34,238
Deferred tax liability:
Core deposit intangibles		205			411
Valuation differences resulting from acquired assets and liabilities		2,849			2,898
Fair value adjustment on financial liabilities carried at fair value		15,781			15,776
Unrealized gains on securities available for sale		14,697			9,120
Other		1,705			1,993
Deferred tax liability		35,237			30,198
Net deferred tax (liability) asset included in other (liabilities) assets	$	(837	)	$	4,040