|12 Months Ended|
Dec. 31, 2017
(5) Accrued Liabilities
Accrued liabilities as of December 31, 2016 and 2017 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