Molteni Purchase Agreement (Tables)
|3 Months Ended|
Mar. 31, 2019
|Purchase Agreement [Line Items]|
|Contract with Customer, Asset and Liability [Table Text Block]||
The following table presents changes in contract assets and liabilities during the three months ended March 31, 2019:
Tabular disclosure of contract balances and changes in contract balances.
Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef