Goodwill and Intangible Assets - Deposits Purchased Premium (Details) - USD ($)	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018	Dec. 31, 2018
Deposits Purchased Premium
Accretion period			5 years
Balance at the beginning of the period			$ 27,000
Liberty Bell Bank acquisition					$ 108,000
Accretion	$ (6,000)	$ (30,000)	(13,000)	$ (36,000)	(81,000)
Balance at the end of the period	14,000		14,000		$ 27,000
Remainder of 2019	10,000		10,000
Thereafter	$ 4,000		$ 4,000