Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurements (Details)

v3.10.0.1
Fair Value Measurements (Details) - USD ($)
6 Months Ended 12 Months Ended
Jun. 30, 2018
Dec. 31, 2017
Assets    
Marketable securities $ 69,852,000 $ 0
Nonrecurring [Member]    
Assets    
Licensed technology (net) 3,803,000 3,977,000
Goodwill 32,466,000 32,466,000
Nonrecurring [Member] | Fair Value, Inputs, Level 1 [Member]    
Assets    
Licensed technology (net) 0 0
Goodwill 0 0
Nonrecurring [Member] | Fair Value, Inputs, Level 2 [Member]    
Assets    
Licensed technology (net) 0 0
Goodwill 0 0
Nonrecurring [Member] | Fair Value, Inputs, Level 3 [Member]    
Assets    
Licensed technology (net) 3,803,000 3,977,000
Goodwill 32,466,000 32,466,000
Nonrecurring [Member] | Licensed technology [Member]    
Liabilites    
Total gains (losses) 174,000 127,000
Nonrecurring [Member] | Goodwill [Member]    
Liabilites    
Total gains (losses) 0 0
Recurring [Member]    
Assets    
Marketable securities 0  
Liabilites    
Contingent consideration   0
Marketable securities Total Gains (Losses) 0  
Recurring [Member] | Contingent Consideration [Member]    
Liabilites    
Total gains (losses)   1,391,000
Recurring [Member] | Fair Value, Inputs, Level 1 [Member]    
Assets    
Marketable securities 0  
Liabilites    
Contingent consideration   0
Recurring [Member] | Fair Value, Inputs, Level 2 [Member]    
Assets    
Marketable securities 69,852,000  
Liabilites    
Contingent consideration   0
Recurring [Member] | Fair Value, Inputs, Level 3 [Member]    
Assets    
Marketable securities $ 0  
Liabilites    
Contingent consideration   $ 0