Restructuring Charges (Tables)

12 Months Ended

Dec. 31, 2015

Restructuring and Related Activities [Abstract]

Roll Forward of Accrued Restructuring Expense

A roll-forward of the accrued restructuring expense is as follows:

(Dollars in thousands)	Severance expenses			Write-downs and retirements of fixed assets			Lease cancellations			Total
Accrued at January 1, 2015	$	—		$	—		$	—		$	—
Restructuring charges	73			607			962			1,642
Payments	(73		)	—			(128		)	(201		)
Accelerated depreciation	—			(379		)	—			(379		)
Accrued at December 31, 2015	$	—		$	228		$	834		$	1,062