Financial Statements Schedules Schedule V. Valuation and Qualifying Accounts (Tables)
 12 Months Ended
Dec. 31, 2015
Schedule V. Valuation and Qualifying Accounts [Abstract]  
Summary of Valuation Allowance [Table Text Block]
V. Valuation and Qualifying Accounts
(in thousands)
 
 
 
 
 
 
Balance at Beginning of Year

 
Charged to Expense

 
Disposals and Other

 
Balance at End of Year

Valuation Allowance for Deferred Tax Assets:
 
 
 
 
 
 
 
 
Year Ended December 31, 2015
 
$
287,151

 
$
1,033

 
$
(4,548
)
 
$
283,636

Year Ended December 31, 2014
 
$
281,613

 
$
5,686

 
$
(148
)
 
$
287,151