|6 Months Ended
Jun. 29, 2019
|Revenue from Contract with Customer [Abstract]
|Contract Liabilities [Text Block]
Contract liabilities are primarily related to partial prepayments received from customers on long-term supply agreements towards future NSG product delivery. As new prepaid supply agreements are entered into and performance obligations are negotiated, this component of the contract liability balance will increase, and as customers purchase product and utilize their prepaid balances, the balance will decrease. The short-term portion of prepayments from supply agreements is reported on the consolidated condensed balance sheets within other accrued liabilities.
The following table shows the changes in contract liability balances relating to prepaid supply agreements during the first six months of 2019: