Parent Company Only Financial Statements - Schedule of Consolidated Statements of Financial Condition (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
ASSETS
Cash and cash equivalents	$ 69,778	$ 59,724
Other assets	2,814	2,271
Total assets	1,059,901	925,522
LIABILITIES AND STOCKHOLDERS' EQUITY
Stockholders' equity	169,172	164,785	$ 92,992	$ 91,062
Total liabilities and stockholders' equity	1,059,901	925,522
Ponce Bank Mutual Holding Company
ASSETS
Cash and cash equivalents	30,867	32,060
Investment in Ponce Bank	130,737	124,726
Loan receivable - ESOP	6,308	6,712
Other assets	1,523	1,349
Total assets	169,435	164,847
LIABILITIES AND STOCKHOLDERS' EQUITY
Other liabilities and accrued expenses	263	62
Stockholders' equity	169,172	164,785
Total liabilities and stockholders' equity	$ 169,435	$ 164,847