• Filing Date: 2018-08-20
  • Form Type: 10-Q
  • Description: Quarterly report
v3.10.0.1
5.0% Senior Unsecured Convertible Notes (Details)
$ / shares in Units, $ in Thousands
3 Months Ended 6 Months Ended
Jul. 28, 2017
USD ($)
d
$ / shares
Jul. 26, 2017
Jun. 30, 2018
USD ($)
Jun. 30, 2018
USD ($)
Dec. 31, 2017
USD ($)
[1]
Apr. 18, 2017
5.0% Senior Unsecured Convertible Notes Due 2023            
Debt Instrument [Line Items]            
Stated interest rate (as percent)     5.00% 5.00%    
Convertible notes, net of discount     $ 69,222 $ 69,222 $ 68,654  
New Convertible Notes Indenture            
Debt Instrument [Line Items]            
Debt instrument issued $ 40,000          
Convertible Notes | 5.0% Senior Unsecured Convertible Notes Due 2023            
Debt Instrument [Line Items]            
Percentage of holders tendering exchange offer, minimum (as percent)   98.00%        
Stated interest rate (as percent)           5.00%
Convertible Notes | New Convertible Notes Indenture            
Debt Instrument [Line Items]            
Debt instrument issued $ 75,800          
Debt instrument, required percentage of trustees or holders to declare Notes immediately due and payable (as percent) 25.00%          
Debt instrument, required percentage of principal for each day of default 0.25%          
Debt instrument, additional required percentage of principal for each day of restricted transfer default 0.25%          
Debt instrument, maximum required percentage of principal restricted transfer default 0.50%          
Debt instrument, debt default, special interest percentage of principal 0.50%          
Convertible Notes | New Convertible Notes            
Debt Instrument [Line Items]            
Debt instrument, conversion price (in usd per share) | $ / shares $ 2.00          
Debt instrument, conversion rate 0.5          
Debt instrument, redemption price, percentage (as percent) 100.00%          
Debt instrument, convertible, minimum percentage of common stock price (as percent) 120.00%          
Debt instrument, convertible, threshold trading days | d 15          
Debt instrument, convertible, threshold consecutive trading days | d 30          
Convertible notes, net of discount     69,200 69,200    
Unamortized debt discount     5,800 5,800    
Debt instrument origination cost     853 853    
Interest expense debt     1,200 2,500    
Interest included in interest expense     948 1,900    
Amortization of debt discounts     255 495    
Amortization of debt issuance costs     $ 38 $ 73    
[1] Derived from audited consolidated financial statements.