XML 42 R31.htm IDEA: XBRL DOCUMENT v3.7.0.1
FINANCIAL STATEMENT PRESENTATION (Details)
$ in Thousands
6 Months Ended
Jun. 30, 2017
USD ($)
segment
Dec. 31, 2016
USD ($)
Basis of Presentation and Principles of Consolidation    
Number of operating segments | segment 1  
Allowance for doubtful accounts receivable | $ $ 0 $ 0