Purchase Contracts (Details) $ in Thousands	Jun. 30, 2018 USD ($)
Long-term Purchase Commitment [Line Items]
Outstanding minimum payments	$ 53,452
Yarn
Long-term Purchase Commitment [Line Items]
Outstanding minimum payments	38,642
Finished fabric
Long-term Purchase Commitment [Line Items]
Outstanding minimum payments	1,542
Finished products
Long-term Purchase Commitment [Line Items]
Outstanding minimum payments	$ 13,268