Income Taxes (Narrative) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
U.S. federal statutory income tax rate	35.00%	35.00%
change in valuation allowance during the year	$ 836
Unrecognized tax benefits	2,777	2,273
Unrecognized tax benefits that would impact effective tax rate	160	163
Accrued penalties and interest		7
Open Tax Year		1998
Federal [Member]
Operating Loss Carryforwards	557,934
Operating loss carryforward, tax effected, benefit to be recognized in additional paid-in capital	2,643
Operating Loss Carryforwards, Expiration Dates		from 2018 through 2033
Tax credit carryforward	6,078
Tax credit carryforward expiration date range		from 2018 through 2033
State [Member]
Operating Loss Carryforwards	88,224
Operating loss carryforward, tax effected, benefit to be recognized in additional paid-in capital	1,906
Operating Loss Carryforwards, Expiration Dates		from 2014 to 2033
Tax credit carryforward	$ 5,323
Tax credit carryforward expiration date range		indefinitely