Loans Receivable, Net (Tables)

12 Months Ended

Dec. 31, 2013

Receivables [Abstract]

Summary of activity in the ALLL on a portfolio class basis

	Year ended December 31, 2013
(Dollars in thousands)	Total			Residential Real Estate		Commercial Real Estate		Other Commercial		Home Equity		Other Consumer
Allowance for loan and lease losses
Balance at beginning of period	$	130,854		15,482		74,398		21,567		10,659		8,748
Provision for loan losses	6,887			(921	)	(3,670	)	10,271		868		339
Charge-offs	(13,643		)	(793	)	(3,736	)	(4,671	)	(2,594	)	(1,849	)
Recoveries	6,253			299		3,340		1,463		366		785
Balance at end of period	$	130,351		14,067		70,332		28,630		9,299		8,023

	Year ended December 31, 2012
(Dollars in thousands)	Total			Residential Real Estate		Commercial Real Estate		Other Commercial		Home Equity		Other Consumer
Allowance for loan and lease losses
Balance at beginning of period	$	137,516		17,227		76,920		20,833		13,616		8,920
Provision for loan losses	21,525			2,879		11,012		4,690		324		2,620
Charge-offs	(34,672		)	(5,267	)	(16,339	)	(5,239	)	(4,369	)	(3,458	)
Recoveries	6,485			643		2,805		1,283		1,088		666
Balance at end of period	$	130,854		15,482		74,398		21,567		10,659		8,748

	Year ended December 31, 2011
(Dollars in thousands)	Total			Residential Real Estate		Commercial Real Estate		Other Commercial		Home Equity		Other Consumer
Allowance for loan and lease losses
Balance at beginning of period	$	137,107		20,957		76,147		19,932		13,334		6,737
Provision for loan losses	64,500			1,455		39,563		10,709		4,450		8,323
Charge-offs	(69,366		)	(5,671	)	(42,042	)	(10,386	)	(4,644	)	(6,623	)
Recoveries	5,275			486		3,252		578		476		483
Balance at end of period	$	137,516		17,227		76,920		20,833		13,616		8,920

Summary of Loans and ALLL on a portfolio class basis

	December 31, 2013
(Dollars in thousands)	Total		Residential Real Estate	Commercial Real Estate	Other Commercial	Home Equity	Other Consumer
Allowance for loan and lease losses
Individually evaluated for impairment	$	11,949	990	3,763	6,155	265	776
Collectively evaluated for impairment	118,402		13,077	66,569	22,475	9,034	7,247
Total allowance for loan and lease losses	$	130,351	14,067	70,332	28,630	9,299	8,023
Loans receivable
Individually evaluated for impairment	$	199,680	24,070	119,526	41,504	9,039	5,541
Collectively evaluated for impairment	3,863,158		553,519	1,929,721	810,532	357,426	211,960
Total loans receivable	$	4,062,838	577,589	2,049,247	852,036	366,465	217,501

	December 31, 2012
(Dollars in thousands)	Total		Residential Real Estate	Commercial Real Estate	Other Commercial	Home Equity	Other Consumer
Allowance for loan and lease losses
Individually evaluated for impairment	$	15,534	1,680	7,716	3,859	870	1,409
Collectively evaluated for impairment	115,320		13,802	66,682	17,708	9,789	7,339
Total allowance for loan and lease losses	$	130,854	15,482	74,398	21,567	10,659	8,748
Loans receivable
Individually evaluated for impairment	$	201,735	25,862	125,282	33,593	11,074	5,924
Collectively evaluated for impairment	3,195,690		490,605	1,530,226	589,804	392,851	192,204
Total loans receivable	$	3,397,425	516,467	1,655,508	623,397	403,925	198,128

Summary of the impaired loans on a portfolio class basis

	At or for the Year ended December 31, 2013
(Dollars in thousands)	Total		Residential Real Estate	Commercial Real Estate	Other Commercial	Home Equity	Other Consumer
Loans with a specific valuation allowance
Recorded balance	$	61,503	7,233	23,917	27,015	886	2,452
Unpaid principal balance	63,406		7,394	25,331	27,238	949	2,494
Specific valuation allowance	11,949		990	3,763	6,155	265	776
Average balance	59,823		7,237	26,105	22,460	767	3,254
Loans without a specific valuation allowance
Recorded balance	$	138,177	16,837	95,609	14,489	8,153	3,089
Unpaid principal balance	169,082		18,033	119,017	19,156	9,631	3,245
Average balance	139,129		18,103	95,808	14,106	8,844	2,268
Totals
Recorded balance	$	199,680	24,070	119,526	41,504	9,039	5,541
Unpaid principal balance	232,488		25,427	144,348	46,394	10,580	5,739
Specific valuation allowance	11,949		990	3,763	6,155	265	776
Average balance	198,952		25,340	121,913	36,566	9,611	5,522

	At or for the Year ended December 31, 2012
(Dollars in thousands)	Total		Residential Real Estate	Commercial Real Estate	Other Commercial	Home Equity	Other Consumer
Loans with a specific valuation allowance
Recorded balance	$	62,759	7,334	29,595	21,205	1,354	3,271
Unpaid principal balance	70,261		7,459	36,887	21,278	1,362	3,275
Specific valuation allowance	15,534		1,680	7,716	3,859	870	1,409
Average balance	76,656		12,797	36,164	22,665	1,390	3,640
Loans without a specific valuation allowance
Recorded balance	$	138,976	18,528	95,687	12,388	9,720	2,653
Unpaid principal balance	149,412		19,613	102,798	14,318	9,965	2,718
Average balance	162,505		16,034	111,554	19,733	11,993	3,191
Totals
Recorded balance	$	201,735	25,862	125,282	33,593	11,074	5,924
Unpaid principal balance	219,673		27,072	139,685	35,596	11,327	5,993
Specific valuation allowance	15,534		1,680	7,716	3,859	870	1,409
Average balance	239,161		28,831	147,718	42,398	13,383	6,831

Loan portfolio aging analysis on a portfolio class basis

	December 31, 2013
(Dollars in thousands)	Total		Residential Real Estate	Commercial Real Estate	Other Commercial	Home Equity	Other Consumer
Accruing loans 30-59 days past due	$	25,761	10,367	7,016	3,673	2,432	2,273
Accruing loans 60-89 days past due	6,355		1,055	2,709	1,421	668	502
Accruing loans 90 days or more past due	604		429	—	160	5	10
Non-accrual loans	81,956		10,702	51,438	10,139	7,950	1,727
Total past due and non-accrual loans	114,676		22,553	61,163	15,393	11,055	4,512
Current loans receivable	3,948,162		555,036	1,988,084	836,643	355,410	212,989
Total loans receivable	$	4,062,838	577,589	2,049,247	852,036	366,465	217,501

	December 31, 2012
(Dollars in thousands)	Total		Residential Real Estate	Commercial Real Estate	Other Commercial	Home Equity	Other Consumer
Accruing loans 30-59 days past due	$	17,454	3,897	7,424	2,020	2,872	1,241
Accruing loans 60-89 days past due	9,643		1,870	3,745	645	2,980	403
Accruing loans 90 days or more past due	1,479		451	594	197	188	49
Non-accrual loans	96,933		14,237	55,687	13,200	11,241	2,568
Total past due and non-accrual loans	125,509		20,455	67,450	16,062	17,281	4,261
Current loans receivable	3,271,916		496,012	1,588,058	607,335	386,644	193,867
Total loans receivable	$	3,397,425	516,467	1,655,508	623,397	403,925	198,128

Summary of TDRs on a portfolio class basis

	Year ended December 31, 2013
(Dollars in thousands)	Total		Residential Real Estate	Commercial Real Estate	Other Commercial	Home Equity	Other Consumer
Troubled debt restructurings
Number of loans	63		9	21	23	2	8
Pre-modification recorded balance	$	29,046	1,907	20,334	6,087	147	571
Post-modification recorded balance	$	29,359	2,293	20,334	6,087	147	498
Troubled debt restructurings that subsequently defaulted
Number of loans	5		1	1	3	—	—
Recorded balance	$	849	265	79	505	—	—

Note 4. Loans Receivable, Net (continued)

	Year ended December 31, 2012
(Dollars in thousands)	Total		Residential Real Estate	Commercial Real Estate	Other Commercial	Home Equity	Other Consumer
Troubled debt restructurings
Number of loans	198		11	85	75	10	17
Pre-modification recorded balance	$	90,747	2,280	57,382	28,639	1,358	1,088
Post-modification recorded balance	$	89,558	2,281	56,120	28,711	1,358	1,088
Troubled debt restructurings that subsequently defaulted
Number of loans	14		—	4	6	3	1
Recorded balance	$	8,304	—	6,192	1,753	301	58

	Year ended December 31, 2011
(Dollars in thousands)	Total		Residential Real Estate	Commercial Real Estate	Other Commercial	Home Equity	Other Consumer
Troubled debt restructurings
Number of loans	338		20	120	149	22	27
Pre-modification recorded balance	$	158,295	13,500	109,593	20,446	9,198	5,558
Post-modification recorded balance	$	155,827	13,452	107,778	20,434	9,200	4,963
Troubled debt restructurings that subsequently defaulted
Number of loans	66		4	29	22	7	4
Recorded balance	$	41,236	2,291	32,615	2,718	3,202	410