Discontinued Operations - Summarized Balance Sheet Information (Details) - USD ($)
$ in Thousands
Sep. 30, 2016
Dec. 31, 2015
Dec. 31, 2014
Assets:      
Cash   $ 600 $ 1,800
Current assets held for sale $ 0 18,772  
Noncurrent assets held for sale 0 12,823  
Liabilities:      
Current liabilities held for sale 0 8,455  
Noncurrent liabilities held for sale 0 110  
Noncontrolling interest of discontinued operations $ 36,227 46,219  
Tridien | Discontinued Operations, Disposed of by Sale      
Assets:      
Cash   629  
Accounts receivable, net   8,410  
Inventories   8,466  
Prepaid expenses and other current assets   1,267  
Current assets held for sale   18,772  
Property, plant and equipment, net   2,103  
Goodwill   7,833  
Intangible assets, net   2,717  
Other non-current assets   170  
Noncurrent assets held for sale   12,823  
Liabilities:      
Accounts payable   4,263  
Accrued expenses and other current liabilities   4,192  
Current liabilities held for sale   8,455  
Noncurrent liabilities held for sale   110  
Noncontrolling interest of discontinued operations   $ 916