Merger, Integration and Other Costs (Tables)

3 Months Ended

Mar. 31, 2018

Merger Integration And Other Costs [Abstract]

Summary of Merger and Restructuring Costs

(Dollars in thousands)	Three Months Ended March 31, 2018
Merger costs	$	10,261
Restructuring costs:
Termination benefits		8,558
Professional services		302
Other		134
		8,994
Total merger and restructuring costs	$	19,255

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Summary of Changes in Accrued Severance Related to Restructuring

Changes in accrued severance related to restructuring were as follows:

(Dollars in thousands)
Accrued severance as of December 31, 2017	$	—
Charges		8,558
Payments		(7,264	)
Accrued severance as of March 31, 2018	$	1,294