Contingencies and Commitments (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Undiscounted reserve
Reserve balance at beginning of year	$ (4,809)	$ (5,301)
Expensed	(275)	(503)
Paid	162	995
Reserve balance at end of year	(4,922)	(4,809)
Ending balance recorded in:
Other liabilities and accrued items	(460)	(430)
Other long-term liabilities	$ (4,462)	$ (4,379)