Comprehensive Income (Tables)

12 Months Ended

Dec. 31, 2012

Comprehensive Income [Abstract]

Components of other comprehensive income and related tax effects

	Years Ended December 31,
	2012			2011			2010
	(in thousands)
Unrealized holding (losses) gains on available-for-sale securities	$	(2,096	)	$	2,594		$	(41	)
Tax effect		880			(1,090	)		17
Unrealized holding (losses) gains on available-for-sale securities, net of tax		(1,216	)		1,504			(24	)
Change in unfunded status of the supplemental retirement plans		(4	)		1,968			(1,627	)
Tax effect		2			(828	)		684
Change in unfunded status of the supplemental retirement plans, net of tax		(2	)		1,140			(943	)
Change in joint beneficiary agreement liability		(370	)		(248	)		(1	)
Tax effect		(64	)		105			—
Change in joint beneficiary agreement liability, net of tax		(434	)		(143	)		(1	)
	$	(1,652	)	$	2,501		$	(968	)

Components of accumulated other comprehensive income

	December 31,
	2012			2011
	(in thousands)
Net unrealized gains on available-for-sale securities	$	8,434		$	10,530
Tax effect		(3,547	)		(4,427	)
Unrealized holding gains on available-for-sale securities, net of tax		4,887			6,103
Unfunded status of the supplemental retirement plans		(3,806	)		(3,802	)
Tax effect		1,600			1,598
Unfunded status of the supplemental retirement plans, net of tax		(2,206	)		(2,204	)
Joint beneficiary agreement liability		(522	)		(152	)
Tax effect		0			64
Joint beneficiary agreement liability, net of tax		(522	)		(88	)
Accumulated other comprehensive income	$	2,159		$	3,811