Loans Receivable and Allowance for Loan Losses - Summary of Impaired Loans Receivable by Class (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended	12 Months Ended
	Mar. 31, 2014	Dec. 31, 2013
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	$ 103,089	$ 116,056
Recorded Investment	94,626	106,370
Related Allowance	7,130	10,217
Average Recorded Investment	95,327	111,008
Interest Income Recognized	827	2,598
Residential [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	31,074	30,581
Recorded Investment	26,665	26,472
Related Allowance	2,285	2,571
Average Recorded Investment	26,786	26,932
Interest Income Recognized	232	856
Commercial [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	42,149	42,237
Recorded Investment	40,709	40,918
Related Allowance	2,478	2,309
Average Recorded Investment	40,838	41,561
Interest Income Recognized	235	979
Multi-Family [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	0	0
Recorded Investment	0	0
Related Allowance	0	0
Average Recorded Investment	0	0
Interest Income Recognized	0	0
Construction [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	0	9,810
Recorded Investment	0	8,449
Related Allowance	0	2,949
Average Recorded Investment	0	8,659
Interest Income Recognized	0	0
Mortgage Loans [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	73,223	82,628
Recorded Investment	67,374	75,839
Related Allowance	4,763	7,829
Average Recorded Investment	67,624	77,152
Interest Income Recognized	467	1,835
Commercial Loans [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	27,408	30,942
Recorded Investment	24,958	28,210
Related Allowance	2,248	2,221
Average Recorded Investment	25,395	31,456
Interest Income Recognized	114	674
Consumer Loans [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	2,458	2,486
Recorded Investment	2,294	2,321
Related Allowance	119	167
Average Recorded Investment	2,308	2,400
Interest Income Recognized	246	89
Loans With No Related Allowance [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	25,694	27,293
Recorded Investment	20,480	21,958
Average Recorded Investment	20,614	24,082
Interest Income Recognized	313	352
Loans With No Related Allowance [Member] | Residential [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	14,607	13,459
Recorded Investment	10,791	9,999
Average Recorded Investment	10,874	10,322
Interest Income Recognized	84	299
Loans With No Related Allowance [Member] | Commercial [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	5,081	4,917
Recorded Investment	4,847	4,667
Average Recorded Investment	4,856	4,834
Interest Income Recognized	0	3
Loans With No Related Allowance [Member] | Multi-Family [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	0	0
Recorded Investment	0	0
Average Recorded Investment	0	0
Interest Income Recognized	0	0
Loans With No Related Allowance [Member] | Construction [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	0	0
Recorded Investment	0	0
Average Recorded Investment	0	0
Interest Income Recognized	0	0
Loans With No Related Allowance [Member] | Mortgage Loans [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	19,688	18,376
Recorded Investment	15,638	14,666
Average Recorded Investment	15,730	15,156
Interest Income Recognized	84	302
Loans With No Related Allowance [Member] | Commercial Loans [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	4,991	8,163
Recorded Investment	3,981	6,674
Average Recorded Investment	4,015	8,252
Interest Income Recognized	0	24
Loans With No Related Allowance [Member] | Consumer Loans [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	1,015	754
Recorded Investment	861	618
Average Recorded Investment	869	674
Interest Income Recognized	229	26
Loans With Allowance Recorded [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	77,395	88,763
Recorded Investment	74,146	84,412
Related Allowance	7,130	10,217
Average Recorded Investment	74,713	86,926
Interest Income Recognized	514	2,246
Loans With Allowance Recorded [Member] | Residential [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	16,467	17,122
Recorded Investment	15,874	16,473
Related Allowance	2,285	2,571
Average Recorded Investment	15,912	16,610
Interest Income Recognized	148	557
Loans With Allowance Recorded [Member] | Commercial [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	37,068	37,320
Recorded Investment	35,862	36,251
Related Allowance	2,478	2,309
Average Recorded Investment	35,982	36,727
Interest Income Recognized	235	976
Loans With Allowance Recorded [Member] | Multi-Family [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	0	0
Recorded Investment	0	0
Related Allowance	0	0
Average Recorded Investment	0	0
Interest Income Recognized	0	0
Loans With Allowance Recorded [Member] | Construction [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	0	9,810
Recorded Investment	0	8,449
Related Allowance	0	2,949
Average Recorded Investment	0	8,659
Interest Income Recognized	0	0
Loans With Allowance Recorded [Member] | Mortgage Loans [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	53,535	64,252
Recorded Investment	51,736	61,173
Related Allowance	4,763	7,829
Average Recorded Investment	51,894	61,996
Interest Income Recognized	383	1,533
Loans With Allowance Recorded [Member] | Commercial Loans [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	22,417	22,779
Recorded Investment	20,977	21,536
Related Allowance	2,248	2,221
Average Recorded Investment	21,380	23,204
Interest Income Recognized	114	650
Loans With Allowance Recorded [Member] | Consumer Loans [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	1,443	1,732
Recorded Investment	1,433	1,703
Related Allowance	119	167
Average Recorded Investment	1,439	1,726
Interest Income Recognized	$ 17	$ 63