• Filing Date: 2018-05-10
  • Form Type: 10-Q
  • Description: Quarterly report
v3.8.0.1
8.50% Senior Unsecured Convertible Notes (Details)
1 Months Ended 3 Months Ended
Jul. 28, 2017
USD ($)
Jul. 26, 2017
USD ($)
Apr. 18, 2017
Mar. 14, 2017
USD ($)
Feb. 21, 2014
Feb. 28, 2014
USD ($)
d
$ / shares
Mar. 31, 2018
USD ($)
Mar. 31, 2017
USD ($)
Jun. 30, 2015
$ / shares
shares
Dec. 31, 2017
USD ($)
[1]
Feb. 14, 2017
Debt Instrument [Line Items]                      
Interest paid in kind             $ 0 $ 3,477,000      
Existing Note Holders | Exchange Offers                      
Debt Instrument [Line Items]                      
Percentage of holders tendering exchange offer, minimum (as percent)     98.00%                
8.50% Senior Unsecured Convertible Notes Due 2019                      
Debt Instrument [Line Items]                      
Convertible notes, net of discount             1,118,000     $ 1,098,000  
5.0% Senior Unsecured Convertible Notes Due 2023                      
Debt Instrument [Line Items]                      
Convertible notes, net of discount             68,929,000     $ 68,654,000  
Convertible Notes | 8.50% Senior Unsecured Convertible Notes Due 2019                      
Debt Instrument [Line Items]                      
Debt instrument issued $ 73,000,000 $ 74,200,000       $ 70,700,000 $ 1,200,000        
Stated interest rate (as percent)           8.50%          
Debt instrument, due date             2019        
Debt instrument, issuance date         Feb. 21, 2014            
Debt instrument, maturity date             Feb. 15, 2019        
Debt instrument, frequency of periodic payment             semi-annually in arrears on August 15 and February 15 of each year        
Debt instrument, conversion shares per $1,000 of principal amount (in shares)           147.9290     151.7912    
Debt instrument, conversion rate           0.147929          
Debt instrument, conversion price (in usd per share) | $ / shares           $ 6.76     $ 6.59    
Common stock issued for rights offering, net of costs (in shares) | shares                 6,688,433    
Debt instrument, redemption start date             Feb. 15, 2017        
Debt instrument, convertible, minimum percentage of common stock price (as percent)           130.00%          
Debt instrument, convertible, threshold trading days | d           20          
Debt instrument, convertible, threshold consecutive trading days | d           30          
Debt instrument, redemption price, percentage (as percent)           100.00%          
Interest paid in kind 2,800,000                    
Gains on restructuring of debt 0                    
Debt restructuring, amount reclassified to succeeding debt instrument 7,700,000                    
Debt restructuring, debt discount reclassified to succeeding instrument 6,700,000                    
Debt instrument, debt issuance costs reclassified to succeeding debt instrument $ 991,000                    
Convertible notes, net of discount             $ 1,100,000        
Unamortized debt discount             66,000        
Debt instrument origination cost             10,000        
Interest expense debt             46,000 3,100,000      
Interest included in interest expense             25,000 2,100,000      
Amortization of debt discounts             18,000 862,000      
Payments of debt issuance costs             $ 3,000 $ 128,000      
Convertible Notes | Additional 8.50% Convertible Notes                      
Debt Instrument [Line Items]                      
Debt instrument issued       $ 3,500,000              
Stated interest rate (as percent)                     8.50%
Percentage of aggregate principal amount of convertible notes (as percent)       98.00%              
Convertible Notes | 5.0% Senior Unsecured Convertible Notes Due 2023                      
Debt Instrument [Line Items]                      
Stated interest rate (as percent)     5.00%                
Percentage of holders tendering exchange offer, minimum (as percent)   98.00%                  
[1] Derived from audited consolidated financial statements.