Fair Value Measurements (Tables)

9 Months Ended

Oct. 01, 2017

Fair Value Disclosures [Abstract]

Summary of Items Measured at Fair Value

The following table categorizes items measured at fair value at October 1, 2017:

			Fair Value Measurement at Reporting Date Using
			Quoted Prices in Active Markets for Identical Assets		Significant Other Observable Inputs		Significant Unobservable Inputs
October 1, 2017	Total		(Level 1)		(Level 2)		(Level 3)
(Dollars in thousands)
Assets
Certificates of deposit	$	750	$	—	$	750	$	—
Cash surrender value		7,944		—		7,944		—
Derivative contracts		8,248		—		8,248		—
Total	$	16,942	$	—	$	16,942	$	—
Liabilities
Derivative contracts	$	7,750	$	—	$	7,750	$	—
Embedded derivative liability		6,768		—		—		6,768
Total	$	14,518	$	—	$	7,750	$	6,768

The following table categorizes items measured at fair value at December 31, 2016:

			Fair Value Measurement at Reporting Date Using
December 31, 2016	Total		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
(Dollars in thousands)
Assets
Certificates of deposit	$	750	$	—	$	750	$	—
Cash surrender value		7,480		—		7,480		—
Derivative contracts		13		—		13		—
Total	$	8,243	$	—	$	8,243	$	—
Liabilities
Derivative contracts	$	24,773	$	—	$	24,773	$	—
Total	$	24,773	$	—	$	24,773	$	—