Loans and Leases - Narrative (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Dec. 31, 2018
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and Leases Receivable Net of Deferred Income, Acquired	$ 332,676		$ 377,376
Carrying amount	569		695
Impaired loans with no related reserve, Recorded Investment	$ 10,785		13,174
Maximum modification period on short-term basis	1 year
Restructured loan past due period	90 days
Receivable related to an operating lease contract	$ 20		0
Interest income on lease financing	4,000	$ 3,700
Lease Financings [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and Leases Receivable Net of Deferred Income, Acquired	0		0
Impaired loans with no related reserve, Recorded Investment	0		$ 0
Fox Chase Bank [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and Leases Receivable Net of Deferred Income, Acquired	289,200
Carrying amount	61
Valley Green Bank [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and Leases Receivable Net of Deferred Income, Acquired	43,500
Carrying amount	508
Minimum [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Amount of Loan Relationship Balance, Loans Reviewed Annually	1,000
Maximum [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Amount of Loan Relationship Balance, Loans Reviewed on a Performance Basis	$ 1,000