Parent-only Financial Information - Statements of Operations (Detail) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Condensed Financial Statements, Captions [Line Items]
Total interest income	$ 74,349	$ 73,013	$ 72,188	$ 72,231	$ 73,800	$ 73,652	$ 67,386	$ 64,523	$ 291,781	$ 279,361	$ 252,777
Non-interest expense	47,419	43,614	46,119	43,437	42,297	45,833	43,671	38,190	180,589	169,991	148,763
Income before income tax expense	30,929	29,643	31,397	28,194	31,187	26,945	22,557	24,727	120,163	105,416	105,900
Income tax expense	9,414	9,034	9,601	8,392	9,968	7,913	6,206	7,698	36,441	31,785	35,366
Net income	$ 21,515	$ 20,609	$ 21,796	$ 19,802	$ 21,219	$ 19,032	$ 16,351	$ 17,029	83,722	73,631	70,534
Provident Financial Services, Inc. [Member]
Condensed Financial Statements, Captions [Line Items]
Dividends from subsidiary									(41,285)	(36,118)	(32,320)
Interest income									2,153	2,276	2,390
Investment gain									(12)	(11)	(9)
Total interest income									43,450	38,405	34,719
Non-interest expense									812	814	891
Total expense									812	814	891
Income before income tax expense									42,638	37,591	33,828
Income tax expense									505	551	563
Income before undistributed net income of subsidiary									42,133	37,040	33,265
Equity in undistributed net income of subsidiary (dividends in excess of earnings)									41,589	36,591	37,269
Net income									$ 83,722	$ 73,631	$ 70,534