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Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

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-SubTopic 10

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-Paragraph 15

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LOAN PORTFOLIO - Impaired loans (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		12 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014	Dec. 31, 2013
Financing Receivable Impaired [Line Items]
Recorded Investment with no Related Allowance	$ 207,240		$ 238,812
Unpaid Principal Balance with no Related Allowance	245,462		281,868
Average Recorded Investment No Related Allowance	210,284		246,473
Interest Income with no Related Allowance Accrual Basis	684
Interest Income with No Related Allowance Cash Basis	730
Recorded Investment with Related Allowance	747,741		706,595
Unpaid Principal Balance with Related Allowance	854,272		803,716
Related Allowance	62,140	85,016	55,205	102,601
Average Recorded Investment With Related Allowance	753,876		724,143
Interest Income with Related Allowance Accrual Basis	7,553
Interest Income with Realted Allowance Cash Basis	748
Recorded Investment	954,981	879,388	945,407	919,112
Unpaid Principal Balance	1,099,734		1,085,584
Average Recorded Investments	964,160		970,616
Interest Income on Impaired Loans Accrual Basis	8,237	5,900
Interest Income on Impaired Loans Cash Basis	1,478	1,700
Fhava Guaranteed Loans [Member]
Financing Receivable Impaired [Line Items]
Recorded Investment with no Related Allowance	0		0
Unpaid Principal Balance with no Related Allowance	0		0
Average Recorded Investment No Related Allowance	0		0
Interest Income with no Related Allowance Accrual Basis	0
Interest Income with No Related Allowance Cash Basis	0
Recorded Investment with Related Allowance	0		0
Unpaid Principal Balance with Related Allowance	0		0
Related Allowance	0		0
Average Recorded Investment With Related Allowance	0		0
Interest Income with Related Allowance Accrual Basis	0
Interest Income with Realted Allowance Cash Basis	0
Recorded Investment	0		0
Unpaid Principal Balance	0		0
Average Recorded Investments	0		0
Interest Income on Impaired Loans Accrual Basis	0
Interest Income on Impaired Loans Cash Basis	0
Other Residential Mortgage Loans [Member]
Financing Receivable Impaired [Line Items]
Recorded Investment with no Related Allowance	62,337		74,177
Unpaid Principal Balance with no Related Allowance	68,263		80,522
Average Recorded Investment No Related Allowance	63,040		75,711
Interest Income with no Related Allowance Accrual Basis	199
Interest Income with No Related Allowance Cash Basis	79
Recorded Investment with Related Allowance	367,189		350,067
Unpaid Principal Balance with Related Allowance	416,579		396,203
Related Allowance	14,862		10,854
Average Recorded Investment With Related Allowance	368,999		357,129
Interest Income with Related Allowance Accrual Basis	4,224
Interest Income with Realted Allowance Cash Basis	414
Recorded Investment	429,526		424,244
Unpaid Principal Balance	484,842		476,725
Average Recorded Investments	432,039		432,840
Interest Income on Impaired Loans Accrual Basis	4,423
Interest Income on Impaired Loans Cash Basis	493
Commercial Mortgage Loans [Member]
Financing Receivable Impaired [Line Items]
Recorded Investment with no Related Allowance	100,797		109,271
Unpaid Principal Balance with no Related Allowance	120,956		132,170
Average Recorded Investment No Related Allowance	101,196		113,674
Interest Income with no Related Allowance Accrual Basis	406
Interest Income with No Related Allowance Cash Basis	425
Recorded Investment with Related Allowance	123,568		101,467
Unpaid Principal Balance with Related Allowance	143,090		116,329
Related Allowance	13,238		14,289
Average Recorded Investment With Related Allowance	124,701		104,191
Interest Income with Related Allowance Accrual Basis	475
Interest Income with Realted Allowance Cash Basis	279
Recorded Investment	224,365		210,738
Unpaid Principal Balance	264,046		248,499
Average Recorded Investments	225,897		217,865
Interest Income on Impaired Loans Accrual Basis	881
Interest Income on Impaired Loans Cash Basis	704
Commercial And Industrial Loan [Member]
Financing Receivable Impaired [Line Items]
Recorded Investment with no Related Allowance	32,080		41,131
Unpaid Principal Balance with no Related Allowance	36,975		47,647
Average Recorded Investment No Related Allowance	33,802		42,011
Interest Income with no Related Allowance Accrual Basis	18
Interest Income with No Related Allowance Cash Basis	200
Recorded Investment with Related Allowance	194,576		195,240
Unpaid Principal Balance with Related Allowance	227,417		226,431
Related Allowance	24,871		21,314
Average Recorded Investment With Related Allowance	196,896		198,930
Interest Income with Related Allowance Accrual Basis	1,950
Interest Income with Realted Allowance Cash Basis	43
Recorded Investment	226,656		236,371
Unpaid Principal Balance	264,392		274,078
Average Recorded Investments	230,698		240,941
Interest Income on Impaired Loans Accrual Basis	1,968
Interest Income on Impaired Loans Cash Basis	243
Construction Loans [Member]
Financing Receivable Impaired [Line Items]
Related Allowance	3,381	15,154
Recorded Investment	37,593	58,636
Consumer Auto Loans [Member]
Financing Receivable Impaired [Line Items]
Recorded Investment with no Related Allowance	562		0
Unpaid Principal Balance with no Related Allowance	562		0
Average Recorded Investment No Related Allowance	562		0
Interest Income with no Related Allowance Accrual Basis	10
Interest Income with No Related Allowance Cash Basis	0
Recorded Investment with Related Allowance	16,986		16,991
Unpaid Principal Balance with Related Allowance	16,986		16,991
Related Allowance	3,058		2,787
Average Recorded Investment With Related Allowance	17,472		18,504
Interest Income with Related Allowance Accrual Basis	328
Interest Income with Realted Allowance Cash Basis	0
Recorded Investment	17,548		16,991
Unpaid Principal Balance	17,548		16,991
Average Recorded Investments	18,034		18,504
Interest Income on Impaired Loans Accrual Basis	338
Interest Income on Impaired Loans Cash Basis	0
Finance Leases [Member]
Financing Receivable Impaired [Line Items]
Recorded Investment with no Related Allowance	0		0
Unpaid Principal Balance with no Related Allowance	0		0
Average Recorded Investment No Related Allowance	0		0
Interest Income with no Related Allowance Accrual Basis	0
Interest Income with No Related Allowance Cash Basis	0
Recorded Investment with Related Allowance	2,053		2,181
Unpaid Principal Balance with Related Allowance	2,053		2,181
Related Allowance	186		253
Average Recorded Investment With Related Allowance	2,137		2,367
Interest Income with Related Allowance Accrual Basis	48
Interest Income with Realted Allowance Cash Basis	0
Recorded Investment	2,053		2,181
Unpaid Principal Balance	2,053		2,181
Average Recorded Investments	2,137		2,367
Interest Income on Impaired Loans Accrual Basis	48
Interest Income on Impaired Loans Cash Basis	0
Other Consumer Loans [Member]
Financing Receivable Impaired [Line Items]
Recorded Investment with no Related Allowance	3,229		3,778
Unpaid Principal Balance with no Related Allowance	4,634		5,072
Average Recorded Investment No Related Allowance	3,268		3,924
Interest Income with no Related Allowance Accrual Basis	10
Interest Income with No Related Allowance Cash Basis	26
Recorded Investment with Related Allowance	14,011		11,637
Unpaid Principal Balance with Related Allowance	14,259		12,136
Related Allowance	2,544		3,131
Average Recorded Investment With Related Allowance	14,266		12,291
Interest Income with Related Allowance Accrual Basis	382
Interest Income with Realted Allowance Cash Basis	3
Recorded Investment	17,240		15,415
Unpaid Principal Balance	18,893		17,208
Average Recorded Investments	17,534		16,215
Interest Income on Impaired Loans Accrual Basis	392
Interest Income on Impaired Loans Cash Basis	29
Commercial Construction [Member]
Financing Receivable Impaired [Line Items]
Recorded Investment with no Related Allowance	0		0
Unpaid Principal Balance with no Related Allowance	0		0
Average Recorded Investment No Related Allowance	0		0
Interest Income with no Related Allowance Accrual Basis	0
Interest Income with No Related Allowance Cash Basis	0
Recorded Investment with Related Allowance	11,790		11,790
Unpaid Principal Balance with Related Allowance	11,790		11,790
Related Allowance	1,145		790
Average Recorded Investment With Related Allowance	11,790		11,867
Interest Income with Related Allowance Accrual Basis	128
Interest Income with Realted Allowance Cash Basis	0
Recorded Investment	11,790		11,790
Unpaid Principal Balance	11,790		11,790
Average Recorded Investments	11,790		11,867
Interest Income on Impaired Loans Accrual Basis	128
Interest Income on Impaired Loans Cash Basis	0
Residential Construction [Member]
Financing Receivable Impaired [Line Items]
Recorded Investment with no Related Allowance	6,762		7,461
Unpaid Principal Balance with no Related Allowance	9,346		10,100
Average Recorded Investment No Related Allowance	6,943		8,123
Interest Income with no Related Allowance Accrual Basis	41
Interest Income with No Related Allowance Cash Basis	0
Recorded Investment with Related Allowance	8,213		8,102
Unpaid Principal Balance with Related Allowance	8,917		8,834
Related Allowance	1,016		993
Average Recorded Investment With Related Allowance	8,202		8,130
Interest Income with Related Allowance Accrual Basis	3
Interest Income with Realted Allowance Cash Basis	0
Recorded Investment	14,975		15,563
Unpaid Principal Balance	18,263		18,934
Average Recorded Investments	15,145		16,253
Interest Income on Impaired Loans Accrual Basis	44
Interest Income on Impaired Loans Cash Basis	0
Land Construction [Member]
Financing Receivable Impaired [Line Items]
Recorded Investment with no Related Allowance	1,473		2,994
Unpaid Principal Balance with no Related Allowance	4,726		6,357
Average Recorded Investment No Related Allowance	1,473		3,030
Interest Income with no Related Allowance Accrual Basis	0
Interest Income with No Related Allowance Cash Basis	0
Recorded Investment with Related Allowance	9,355		9,120
Unpaid Principal Balance with Related Allowance	13,181		12,821
Related Allowance	1,220		794
Average Recorded Investment With Related Allowance	9,413		10,734
Interest Income with Related Allowance Accrual Basis	15
Interest Income with Realted Allowance Cash Basis	9
Recorded Investment	10,828		12,114
Unpaid Principal Balance	17,907		19,178
Average Recorded Investments	10,886		13,764
Interest Income on Impaired Loans Accrual Basis	15
Interest Income on Impaired Loans Cash Basis	$ 9