Accumulated Other Comprehensive Income (Loss) (Tables)

9 Months Ended

Sep. 30, 2016

Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]

Summary of activity in accumulated other comprehensive income (loss)

The following table summarizes the components of accumulated other comprehensive income (loss) at September 30, 2016 and 2015, changes during the three and nine month periods then ended, and reclassifications out of accumulated other comprehensive income (loss) during the three and nine month periods ended September 30, 2016 and 2015, respectively.

($ in Thousands)	Investments Securities Available For Sale			Defined Benefit Pension and Post Retirement Obligations			Accumulated Other Comprehensive Income (Loss)
Balance January 1, 2016	$	459		$	(33,075	)	$	(32,616	)
Other comprehensive income before reclassifications	59,849			—			59,849
Amounts reclassified from accumulated other comprehensive income (loss):
Investment securities gain, net	(6,201		)	—			(6,201		)
Personnel expense	—			1,531			1,531
Interest income (Amortization of net unrealized gains on available for sale securities transferred to held to maturity securities)	(4,465		)	—			(4,465		)
Income tax expense	(18,768		)	(584		)	(19,352		)
Net other comprehensive income during period	30,415			947			31,362
Balance September 30, 2016	$	30,874		$	(32,128	)	$	(1,254	)
Balance January 1, 2015	$	18,512		$	(23,362	)	$	(4,850	)
Other comprehensive income before reclassifications	35,101			—			35,101
Amounts reclassified from accumulated other comprehensive income (loss):
Investment securities gain, net	(4,038		)	—			(4,038		)
Personnel expense	—			1,729			1,729
Income tax expense	(11,907		)	(659		)	(12,566		)
Net other comprehensive income during period	19,156			1,070			20,226
Balance September 30, 2015	$	37,668		$	(22,292	)	$	15,376
($ in Thousands)	Investments Securities Available For Sale			Defined Benefit Pension and Post Retirement Obligations			Accumulated Other Comprehensive Income (Loss)
Balance July 1, 2016	$	45,916		$	(32,463	)	$	13,453
Other comprehensive loss before reclassifications	(22,894		)	—			(22,894		)
Amounts reclassified from accumulated other comprehensive income (loss):
Investment securities loss, net	13			—			13
Personnel expense	—			541			541
Interest income (Amortization of net unrealized gains on available for sale securities transferred to held to maturity securities)	(1,441		)	—			(1,441		)
Income tax (expense) benefit	9,280			(206		)	9,074
Net other comprehensive income (loss) during period	(15,042		)	335			(14,707		)
Balance September 30, 2016	$	30,874		$	(32,128	)	$	(1,254	)
Balance July 1, 2015	$	25,282		$	(22,688	)	$	2,594
Other comprehensive income before reclassifications	22,907			—			22,907
Amounts reclassified from accumulated other comprehensive income (loss):
Investment securities gain, net	(2,796		)	—			(2,796		)
Personnel expense	—			639			639
Income tax expense	(7,725		)	(243		)	(7,968		)
Net other comprehensive income during period	12,386			396			12,782
Balance September 30, 2015	$	37,668		$	(22,292	)	$	15,376