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Fair Value Measurements (Details 1) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2016
Jun. 30, 2016
Mar. 31, 2016
Sep. 30, 2015
Jun. 30, 2015
Mar. 31, 2015
Jun. 30, 2016
Jun. 30, 2015
Sep. 30, 2016
Sep. 30, 2015
Dec. 31, 2015
Beginning and ending balances for the Company's fair value measurements using Level 3 inputs                      
New agreements   $ 0     $ 350   $ 2,500 $ 0      
Contingent consideration                      
Beginning and ending balances for the Company's fair value measurements using Level 3 inputs                      
Asset, Beginning Balance $ 0 (160) $ (350) $ 350 0 $ 0 (350) 0 $ (350) $ 0 $ 0
Realized gains (losses) included in earnings 0 160 190 0 0 0          
Sales Proceeds 0   0 0   0          
Asset, Ending Balance 0 0 (160) 350 350 0 0 350 0 350 (350)
Asset fair value 0 (160) (350) 350 0 0 (350) 0 (350) 0 0
Convertible Preferred Stock                      
Beginning and ending balances for the Company's fair value measurements using Level 3 inputs                      
Asset, Beginning Balance 3,294 775 13,550 13,300 13,300 13,300 13,550 13,300 13,550 13,300 13,300
Realized gains (losses) included in earnings     710     0 19 0 0 492  
Sales Proceeds     (13,485)     0     0 (992)  
Asset, Ending Balance 3,294 3,294 775 12,800 13,300 13,300 3,294 13,300 3,294 12,800 13,550
Asset fair value 3,294 $ 775 13,550 13,300 $ 13,300 $ 13,300 13,550 $ 13,300 13,550 13,300 13,300
Level 3 | Convertible Notes                      
Beginning and ending balances for the Company's fair value measurements using Level 3 inputs                      
Asset, Beginning Balance     750       750   750    
Asset, Ending Balance 3,294               3,294   750
Asset fair value $ 3,294   750       750   750   750
Level 3 | Convertible Preferred Stock                      
Beginning and ending balances for the Company's fair value measurements using Level 3 inputs                      
Asset, Beginning Balance     12,800       12,800   12,800    
Asset, Ending Balance       12,800           12,800 12,800
Asset fair value     $ 12,800 $ 12,800     $ 12,800   $ 12,800 $ 12,800 $ 12,800
Market Approach Valuation Technique | Level 3 | Convertible Preferred Stock                      
Beginning and ending balances for the Company's fair value measurements using Level 3 inputs                      
Fair Value Inputs, Earnings before Interest, Taxes, Depreciation, and Amortization Multiple                   5.54 5.6
Income Approach Valuation Technique | Level 3 | Convertible Preferred Stock                      
Beginning and ending balances for the Company's fair value measurements using Level 3 inputs                      
Fair Value Inputs, Discount Rate                   14.50% 14.50%