Annual report pursuant to Section 13 and 15(d)

Restructuring Activity Restructuring Activity (Details)

v3.10.0.1
Restructuring Activity Restructuring Activity (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Restructuring Cost and Reserve [Line Items]      
Operating Leases, Rent Expense, Sublease Rentals $ 2,400 $ 2,100 $ 1,300
Restructuring Reserve 1,946 3,039  
Restructuring charges 3,838 9,524 3,432
Restructuring Reserve, Accrual Adjustment   70  
Payments for Restructuring 4,004 5,991  
Restructuring Reserve, Settled without Cash 927 5,505  
Restructuring Plan, Entropic Communications [Member]      
Restructuring Cost and Reserve [Line Items]      
Restructuring Reserve     536
One-time Termination Benefits [Member]      
Restructuring Cost and Reserve [Line Items]      
Restructuring Reserve 409 239  
Transfers from deferred rent   0  
Restructuring charges 2,094 8,353 1,038
Restructuring Reserve, Accrual Adjustment   0  
Payments for Restructuring 1,924 2,984  
Restructuring Reserve, Settled without Cash 0 5,130  
One-time Termination Benefits [Member] | Restructuring Plan, Entropic Communications [Member]      
Restructuring Cost and Reserve [Line Items]      
Restructuring Reserve     0
Facility Closing [Member]      
Restructuring Cost and Reserve [Line Items]      
Restructuring charges 1,608 1,025 2,264
Stock Based Compensation [Member]      
Restructuring Cost and Reserve [Line Items]      
Restructuring charges 5,100    
Lease Related Impairment [Member]      
Restructuring Cost and Reserve [Line Items]      
Restructuring Reserve 1,490 2,693  
Transfers from deferred rent   4,405  
Restructuring charges 1,608 1,025  
Restructuring Reserve, Accrual Adjustment   0  
Payments for Restructuring 1,884 2,861  
Restructuring Reserve, Settled without Cash 927 375  
Lease Related Impairment [Member] | Restructuring Plan, Entropic Communications [Member]      
Restructuring Cost and Reserve [Line Items]      
Restructuring Reserve     499
Other Restructuring [Member]      
Restructuring Cost and Reserve [Line Items]      
Restructuring Reserve 47 107  
Transfers from deferred rent   0  
Restructuring charges 136 146 130
Restructuring Reserve, Accrual Adjustment   70  
Payments for Restructuring 196 146  
Restructuring Reserve, Settled without Cash $ 0 $ 0  
Other Restructuring [Member] | Restructuring Plan, Entropic Communications [Member]      
Restructuring Cost and Reserve [Line Items]      
Restructuring Reserve     $ 37