Income Taxes (Narrative) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Operating Loss Carryforwards [Line Items]
Valid portion of valuation allowance percentage	100.00%
Number of prior years subject to examination	10 years
Accrued interest and penalties	$ 100,000
Reserves for uncertain tax positions	$ 300,000	$ 200,000
Earliest Tax Year [Member]
Operating Loss Carryforwards [Line Items]
Tax year subject to examination	1997
Federal [Member]
Operating Loss Carryforwards [Line Items]
Net operating loss carryovers expiring unused	$ 290,000,000
Operating loss carryforwards	$ 92,700,000
Federal [Member] | Minimum [Member]
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards, expiration year	2017
Federal [Member] | Maximum [Member]
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards, expiration year	2035
State [Member]
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	$ 1,200,000
State [Member] | Minimum [Member]
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards, expiration year	2016
State [Member] | Maximum [Member]
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards, expiration year	2035