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Long-term Debt (Details) - USD ($)
$ in Thousands
3 Months Ended
Dec. 31, 2015
Sep. 30, 2015
Jan. 30, 2015
Debt Instrument [Line Items]      
Current maturities of long-term debt $ 822 $ 919  
BTU International, Inc (BTU) Merger      
Debt Instrument [Line Items]      
Long-term debt acquired     $ 7,200
SoLayTec, B.V.      
Debt Instrument [Line Items]      
Long-term debt 3,200    
Proceeds from issuance of debt $ 800    
SoLayTec, B.V. | Minimum      
Debt Instrument [Line Items]      
Interest rate 5.95%    
SoLayTec, B.V. | Maximum      
Debt Instrument [Line Items]      
Interest rate 10.00%    
Mortgage Note      
Debt Instrument [Line Items]      
Debt covenant, outstanding principal plus accrued interest percent of appraised value, maximum threshold 80.00%    
Current maturities of long-term debt $ 100    
Mortgage Note | BTU International, Inc (BTU) Merger      
Debt Instrument [Line Items]      
Long-term debt $ 6,800    
Interest rate     4.40%
Federal Home Loan Board Five Year Classic Advance Rate | Mortgage Note      
Debt Instrument [Line Items]      
Basis spread on variable rate 240.00%