XML 63 R51.htm IDEA: XBRL DOCUMENT v3.7.0.1
Stockholders' Equity Stockholders' Equity (Narrative) (Details) - USD ($)
 6 Months Ended
Jun. 30, 2017
Dec. 31, 2016
Class of Stock [Line Items]    
Preferred Stock, Shares Issued 104,574  
Preferred Stock, Par Value Per Share $ 1.00 $ 1.00
Preferred Stock, Liquidation Preference Per Share $ 1,000  
Operating Loss Carryforwards   $ 725,800,000
Common Stock Ownership Enabling Preferred Stock Purchase Rights 4.99%  
Common Stock Ownership Enabling Preferred Stock Purchase Rights, Incremental 0.50%  
Preferred Series B [Member]    
Class of Stock [Line Items]    
Preferred Stock, Shares Issued 104,574  
Preferred Stock, Par Value Per Share $ 1.00  
Preferred Stock, Liquidation Preference Per Share $ 1,000  
Preferred stock $ 4,600,000 $ 0
Preferred Stock, Dividend Rate, Percentage 7.50%  
Preferred stock dividend condition - minimum pension funding 90.00%  
Preferred stock dividend condition - minimum net income preceding quarter $ 7,500,000  
Preferred stock dividend condition - minimum free cash flow preceding four quarters 35,000,000  
Preferred stock dividend condition - minimum cash balance preceding quarter 150,000,000  
Preferred Stock, Liquidation Preference, Value 107,600,000  
Preferred Stock, Cumulative Undeclared Dividend $ 3,000,000  
Restricted Stock Units (RSUs) [Member]    
Class of Stock [Line Items]    
Share-based Compensation, Non-Option Equity Instruments, Granted 25,000