Quarterly report pursuant to Section 13 or 15(d)

Bankruptcy Proceeding Bankruptcy Proceeding (Details)

v3.7.0.1
Bankruptcy Proceeding Bankruptcy Proceeding (Details)
$ in Thousands
May 12, 2016
subsidiary
Jun. 30, 2017
USD ($)
Dec. 31, 2016
USD ($)
Reorganizations [Abstract]      
Number of Subsidiaries Filing Chapter 11 Bankruptcy | subsidiary 8    
Bankruptcy Claims, amount reserved for outstanding claims | $   $ 3,922 $ 3,922