Annual report pursuant to Section 13 and 15(d)

Organization and Summary of Significant Accounting Policies (Details Textuals)

v3.10.0.1
Organization and Summary of Significant Accounting Policies (Details Textuals) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 12 Months Ended
Dec. 31, 2018
Sep. 30, 2018
Jun. 30, 2018
Mar. 31, 2018
Dec. 31, 2017
Sep. 30, 2017
Jun. 30, 2017
Mar. 31, 2017
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
New Accounting Pronouncement, Early Adoption [Line Items]                        
New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification                 $ 24,000      
Accounts receivable, net $ 59,491       $ 66,099       59,491 $ 66,099    
Net revenue 87,627 $ 85,010 $ 101,533 $ 110,827 113,721 $ 113,581 $ 104,175 $ 88,841 384,997 420,318 $ 387,832  
Restricted Cash and Cash Equivalents 1,000               1,000      
Impairment losses                 $ 2,198 2,000 1,300  
Revenue, Performance Obligation, Payment Term                 30 days      
Revenue, Performance Obligation, Delivery Term                 1 year      
Contract with Customer, Right of Return Term                 6 years      
Standard Product Warranty Accrual, Current 500       900       $ 500 900    
Number of operating segments                 1      
Consolidated statements of operations                        
Cost of net revenue                 $ 176,223 212,355 157,842  
Gross profit 45,900 43,876 56,330 62,668 52,093 51,842 51,104 52,924 208,774 207,963 229,990  
Operating Income (Loss)                 (19,097) (21,671) 63,059  
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Noncontrolling Interest                 (32,852) (33,998) 63,690  
Income tax provision (benefit)                 (6,653) (24,811) 2,398  
Net Income (Loss) Attributable to Parent 311 $ (13,935) $ (14,422) $ 1,847 $ (19,448) $ (9,167) $ 10,965 $ 8,463 $ (26,199) $ (9,187) $ 61,292  
Earnings Per Share, Basic   $ (0.20) $ (0.21) $ 0.03 $ (0.29) $ (0.14) $ 0.17 $ 0.13 $ (0.38) $ (0.14) $ 0.96  
Earnings Per Share, Diluted   $ (0.20) $ (0.21) $ 0.03 $ (0.29) $ (0.14) $ 0.16 $ 0.12 $ (0.38) $ (0.14) $ 0.91  
Consolidated balance sheet                        
Inventory 41,738       $ 53,434       $ 41,738 $ 53,434    
Assets, Current 180,611       201,304       180,611 201,304    
Assets 738,831       824,862       738,831 824,862    
Deferred revenue and deferred profit 0       4,362       0 4,362    
Accrued expenses and other current liabilities 23,520       20,306       23,520 20,306    
Liabilities, Current 70,567       76,386       70,567 76,386    
Liabilities 338,895       437,438       338,895 437,438    
Accumulated deficit (93,630)       (69,119)       (93,630) (69,119)    
Total stockholders’ equity 399,936       387,424       399,936 387,424 $ 352,424 $ 262,924
Liabilities and Equity 738,831       824,862       $ 738,831 $ 824,862    
Revenue from Distributors [Member]                        
New Accounting Pronouncement, Early Adoption [Line Items]                        
Concentration Risk, Percentage                 42.00% 34.00% 19.00%  
Minimum [Member]                        
New Accounting Pronouncement, Early Adoption [Line Items]                        
Property, Plant and Equipment, Useful Life                 2 years      
Revenue, Performance Obligation, Warranty Term                 1 year      
Contract with Customer, Rebate and Price Protection Program Term                 1 year      
Maximum [Member]                        
New Accounting Pronouncement, Early Adoption [Line Items]                        
Property, Plant and Equipment, Useful Life                 5 years      
Revenue, Performance Obligation, Warranty Term                 3 years      
Contract with Customer, Rebate and Price Protection Program Term                 2 years      
SEC Schedule, 12-09, Allowance, Credit Loss [Member]                        
New Accounting Pronouncement, Early Adoption [Line Items]                        
Allowances for Doubtful Accounts 46       $ 73       $ 46 $ 73 $ 87 $ 236
Amounts under Legacy GAAP (unaudited)                        
New Accounting Pronouncement, Early Adoption [Line Items]                        
Accounts receivable, net 59,491               59,491      
Net revenue                 370,033      
Consolidated statements of operations                        
Cost of net revenue                 170,719      
Gross profit                 199,314      
Operating Income (Loss)                 (28,557)      
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Noncontrolling Interest                 (42,312)      
Income tax provision (benefit)                 (8,640)      
Net Income (Loss) Attributable to Parent                 $ (33,672)      
Earnings Per Share, Basic                 $ (0.49)      
Consolidated balance sheet                        
Inventory 41,470               $ 41,470      
Assets, Current 180,343               180,343      
Assets 738,563               738,563      
Deferred revenue and deferred profit 19,499               19,499      
Accrued expenses and other current liabilities 12,860               12,860      
Liabilities, Current 79,406               79,406      
Liabilities 347,734               347,734      
Accumulated deficit (102,737)               (102,737)      
Total stockholders’ equity 390,829               390,829      
Liabilities and Equity 738,563               738,563      
Impact of Adoption (unaudited) | Accounting Standards Update 2014-09 [Member]                        
New Accounting Pronouncement, Early Adoption [Line Items]                        
Accounts receivable, net 0               0      
Net revenue                 14,964      
Consolidated statements of operations                        
Cost of net revenue                 5,504      
Gross profit                 9,460      
Operating Income (Loss)                 9,460      
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Noncontrolling Interest                 9,460      
Income tax provision (benefit)                 1,987      
Net Income (Loss) Attributable to Parent                 $ 7,473      
Earnings Per Share, Basic                 $ 0.11      
Consolidated balance sheet                        
Inventory 268               $ 268      
Assets, Current 268               268      
Assets 268               268      
Deferred revenue and deferred profit (19,499)               (19,499)      
Accrued expenses and other current liabilities 10,660               10,660      
Liabilities, Current (8,839)               (8,839)      
Liabilities (8,839)               (8,839)      
Accumulated deficit 9,107               9,107      
Total stockholders’ equity 9,107               9,107      
Liabilities and Equity $ 268               $ 268