Parent Company Only Financial Statements - Schedule of Consolidated Statements of Financial Condition (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
ASSETS
Cash and cash equivalents	$ 59,724	$ 11,716	$ 12,694	$ 15,849
Loan receivable - ESOP	6,712
Other assets	2,271	3,208
Total assets	925,522	744,983
LIABILITIES AND STOCKHOLDERS' EQUITY
Stockholders' Equity	164,785	92,992	$ 91,062	$ 89,600
Total liabilities and stockholders' equity	925,522	$ 744,983
Ponce Bank Mutual Holding Company
ASSETS
Cash and cash equivalents	32,060
Investment in Ponce Bank	39,272
Loan receivable - ESOP	6,712
Other assets	1,349
Total assets	79,393
LIABILITIES AND STOCKHOLDERS' EQUITY
Other liabilities and accrued expenses	62
Stockholders' Equity	79,331
Total liabilities and stockholders' equity	$ 79,393