Comprehensive Income (Tables)

6 Months Ended

Jun. 30, 2015

Equity [Abstract]

Components of Comprehensive Income, Net of Related Tax

The components of comprehensive income, net of related tax, are as follows:

	Three Months Ended						Six Months Ended
	June 30,						June 30,
	2015			2014			2015			2014
Net income	$	40,131		$	34,831		$	80,474		$	69,355
Other comprehensive (loss) income:
Securities available for sale:
Unrealized (losses) gains arising during the period, net of tax (benefit) expense of $(3,870), $2,935, $652 and $11,950		(7,188	)		5,451			1,212			22,193
Reclassification adjustment for gains included in net income, net of tax expense of $5, $272, $2 and $3,583		(9	)		(504	)		(3	)		(6,654	)
Derivative instruments:
Unrealized (losses) gains arising during the period, net of tax (benefit) expense of $(860), $1,537, $645 and $2,939		(1,597	)		2,855			1,196			5,458
Reclassification adjustment for gains included in net income, net of tax expense of $285, $290, $568 and $575		(529	)		(538	)		(1,055	)		(1,067	)
Pension and postretirement benefit obligations:
Unrealized gains arising during the period, net of tax expense of $189, $117, $377 and $234		350			218			700			435
Other comprehensive (loss) income		(8,973	)		7,482			2,050			20,365
Comprehensive income	$	31,158		$	42,313		$	82,524		$	89,720

Changes in AOCI, Net of Tax, by Component

The following table presents changes in AOCI, net of tax, by component:

	Unrealized Net Gains (Losses) on Securities Available for Sale			Unrealized Net Gains (Losses) on Derivative Instruments			Unrecognized Pension and Postretirement Obligations			Total
Six Months Ended June 30, 2015
Balance at beginning of period	$	(440	)	$	(143	)	$	(45,420	)	$	(46,003	)
Other comprehensive income before reclassifications		1,212			1,196			700			3,108
Amounts reclassified from AOCI		(3	)		(1,055	)		—			(1,058	)
Net current period other comprehensive income		1,209			141			700			2,050
Balance at end of period	$	769		$	(2	)	$	(44,720	)	$	(43,953	)