Loans Receivable and Allowance for Loan Losses (Schedule of Troubled Debt Restructurings) (Detail) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2016 USD ($) SecurityLoan	Sep. 30, 2015 USD ($) SecurityLoan	Sep. 30, 2016 USD ($) SecurityLoan	Sep. 30, 2015 USD ($) SecurityLoan
Residential [Member]
Financing Receivable, Recorded Investment [Line Items]
Number of Loans \| SecurityLoan	0	1	0	6
Pre-Modification Outstanding Recorded Investment	$ 0	$ 258	$ 0	$ 2,192
Post-Modification Outstanding Recorded Investment	$ 0	$ 256	$ 0	$ 2,184
Construction Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Number of Loans \| SecurityLoan			0	1
Pre-Modification Outstanding Recorded Investment			$ 0	$ 2,600
Post-Modification Outstanding Recorded Investment			$ 0	$ 2,096
Mortgage Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Number of Loans \| SecurityLoan	0	1	0	7
Pre-Modification Outstanding Recorded Investment	$ 0	$ 258	$ 0	$ 4,792
Post-Modification Outstanding Recorded Investment	$ 0	$ 256	$ 0	$ 4,280
Commercial Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Number of Loans \| SecurityLoan			0	4
Pre-Modification Outstanding Recorded Investment			$ 0	$ 6,659
Post-Modification Outstanding Recorded Investment			$ 0	$ 6,903
Consumer Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Number of Loans \| SecurityLoan	0	0	0	2
Pre-Modification Outstanding Recorded Investment	$ 0	$ 0	$ 0	$ 123
Post-Modification Outstanding Recorded Investment	$ 0	$ 0	$ 0	$ 115
Finance Leases Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Number of Loans \| SecurityLoan	0	1	0	13
Pre-Modification Outstanding Recorded Investment	$ 0	$ 258	$ 0	$ 11,574
Post-Modification Outstanding Recorded Investment	$ 0	$ 256	$ 0	$ 11,298

Number of financing receivables that have been modified by troubled debt restructurings.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 33
-URI http://asc.fasb.org/extlink&oid=66008989&loc=SL6953676-111524

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