|12 Months Ended|
Dec. 31, 2018
|Payables and Accruals [Abstract]|
7. Accrued Expenses
Accrued expenses consist of the following:
Accrued accounts payable trade increased from 2018 to 2017 primarily due to the accrual of contract penalties charged by a supply vendor and accruals for U.S. sales taxes owed to state tax authorities owed at December 31, 2018.
The entire disclosure for accounts payable and accrued liabilities at the end of the reporting period.
Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef