Valuation And Qualifying Accounts Schedule (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Allowance For Valuation Of Inventory [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Period	$ 2,400	$ 949	$ 851
Additions, Charged to Expense	400	1,451	98
Deductions	0	0	0
Balance at End of Period	2,800	2,400	949
Tax Valuation Allowance [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Period	0	13,824	21,846
Additions, Charged to Expense	1,142	859	1,773
Deductions	0	(14,683)	(9,795)
Balance at End of Period	$ 1,142	$ 0	$ 13,824