|6 Months Ended|
Jun. 30, 2019
Accrued liabilities as of December 31, 2018 and June 30, 2019 consisted of the following items (in thousands):
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