Annual report pursuant to Section 13 and 15(d)

Annual report pursuant to Section 13 and 15(d)

Consolidated Statements of Cash Flows (Parenthetical)

v3.8.0.1
Consolidated Statements of Cash Flows (Parenthetical) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Statement Of Cash Flows [Abstract]      
Acquisition, cash acquired $ 0 $ 0 $ 890