XML 132 R116.htm IDEA: XBRL DOCUMENT v3.8.0.1
Other Liabilities Schedule of Changes in Liability for Legal Fees and Settlements (Footnote) (Details) - USD ($)
$ in Thousands
 1 Months Ended 12 Months Ended
Jan. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Loss Contingencies [Line Items]        
Common stock issued, value     $ 0 $ 0
Securities Class Action [Member]        
Loss Contingencies [Line Items]        
Issuance of common stock, shares   625,000    
Common stock issued, value   $ 1,937    
Subsequent Event [Member] | Securities Class Action [Member]        
Loss Contingencies [Line Items]        
Issuance of common stock, shares 1,875,000