Warranty Liability (Tables)
|12 Months Ended|
Dec. 31, 2017
|Schedule of rollforward of Company's warranty liability||
Tabular disclosure of the changes in the guarantor's aggregate product warranty liability, including the beginning balance of the aggregate product warranty liability, the aggregate reductions in that liability for payments made (in cash or in kind) under the warranty, the aggregate changes in the liability for accruals related to product warranties issued during the reporting period, the aggregate changes in the liability for accruals related to preexisting warranties (including adjustments related to changes in estimates), and the ending balance of the aggregate product warranty liability.
Reference 1: http://www.xbrl.org/2003/role/presentationRef