|3 Months Ended|
Mar. 31, 2018
(6) Accrued Liabilities
Accrued liabilities as of December 31, 2017 and March 31, 2018 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://www.xbrl.org/2003/role/presentationRef