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

3 Months Ended

Mar. 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 include the following:

	March 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	$	367,559	$	368,410
Origination of new loans		30,681		24,505
Standby letters of credit		7,030		8,752
Financial instruments whose notional amount exceeds    the amount of credit risk:
Commitments to sell residential mortgage loans		—		—