Commitments and Contingencies (Tables)

3 Months Ended

Mar. 31, 2018

Commitments And Contingencies Disclosure [Abstract]

Summary of Financial instruments with Off-Balance Sheet Credit Risk

Commitments may expire without being used. Off-balance sheet risk to credit loss exists up to the face amount of these instruments, although material losses are not anticipated. The same credit policies are used to make such commitments as are used for loans, including obtaining collateral at exercise of the commitment.

	March 31,		December 31,
	2018		2017
Commitments to extend credit, excluding interest rate lock commitments	$	959,271	$	977,276
Letters of credit		22,214		22,882
Balance at end of period	$	981,485	$	1,000,158

Summary of Allowance for Loan Repurchases or Indemnifications

The following table summarizes the activity in the repurchase reserve:

	For the three months ended
	March 31,
	2018			2017
Balance at beginning of period	$	3,386		$	2,659
Provision for loan repurchases or indemnifications		186			183
Recoveries on previous losses		(58	)		—
Balance at end of period	$	3,514		$	2,842