Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2016

Commitments and Contingencies Disclosure [Abstract]

Unrecorded Unconditional Purchase Obligations Disclosure

The following table summarizes our future minimum purchase commitments as of December 31, 2016:

	Total		Less Than 1 Year		1-3 Years		3-5 Years		More Than 5 Years
(dollars in thousands)
Finished goods minimum purchase obligations	$	32,991	$	18,170	$	14,821	$	—	$	—
Raw material purchase obligations	321,842		314,941		6,901		—		—
Total contractual obligations	$	354,833	$	333,111	$	21,722	$	—	$	—