Financial Instruments with Off-Balance-Sheet Risk (Tables)

12 Months Ended

Dec. 31, 2019

Fair Value Disclosures [Abstract]

Summary of Off-Balance-Sheet Financial Instruments with Contractual Amounts Include Present Credit Risk

Off-balance-sheet financial instruments with contractual amounts that present credit risk included the following:

	December 31, 2019		December 31, 2018
	(dollars in thousands)
Financial instruments whose contractual amount    represents credit risk:
Commitments to extend credit:
Unused portion of existing lines of credit	$	428,020	$	368,410
Origination of new loans		24,413		24,505
Standby letters of credit		9,150		8,752
Financial instruments whose notional amount exceeds    the amount of credit risk:
Commitments to sell residential mortgage loans		3,909		—