Commitments and contingencies (Tables)

6 Months Ended

Jun. 30, 2020

Commitments and Contingencies Disclosure [Abstract]

Summary of Financial instruments with Off-Balance Sheet Credit Risk

	June 30,		December 31,
	2020		2019
Commitments to extend credit, excluding interest rate lock commitments	$	1,146,158	$	1,086,173
Letters of credit	17,881		19,569
Balance at end of period	$	1,164,039	$	1,105,742

Summary of Allowance of Credit Losses on Unfunded Commitments

The table below presents activity within the allowance for credit losses on unfunded commitments:

	For the Three Months Ended June 30,		For the Six Months Ended June 30,
	2020		2020
Balance at beginning of period	$	4,618	$	—
Impact of CECL adoption on provision for credit losses on unfunded commitments	—		2,947
Increase from unfunded commitments acquired in business combination	—		70
Provision for credit losses on unfunded commitments	1,882		3,483
Balance at end of period	$	6,500	$	6,500

Summary of Allowance for Loan Repurchases or Indemnifications

The following table summarizes the activity in the repurchase reserve:

	Three Months Ended June 30,				For the Six Months Ended June 30,
	2020		2019		2020		2019
Balance at beginning of period	$	3,829	$	3,332	$	3,529	$	3,273
Provision for loan repurchases or indemnifications	855		89		1,227		148
Recoveries on previous losses	(83)		(14)		(155)		(14)
Balance at end of period	$	4,601	$	3,407	$	4,601	$	3,407