Stockholders' Equity (Schedule Of Changes in Accumulated Other Comprehensive Income by Component Net of Tax) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	$ 69	$ 4	$ 23
Other comprehensive (loss) income before reclassifications	283	751	175
Amounts reclassified from accumulated other comprehensive income (loss)	(314)	(686)	(194)
Net current period other comprehensive loss	(31)	65	(19)
Ending balance	38	69	4
Gains and losses on available for sale securities [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	4	28	17
Other comprehensive (loss) income before reclassifications	(9)	(24)	11
Amounts reclassified from accumulated other comprehensive income (loss)	0	0	0
Net current period other comprehensive loss	(9)	(24)	11
Ending balance	(5)	4	28
Gains and losses on derivatives [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	65	(24)	6
Other comprehensive (loss) income before reclassifications	292	775	164
Amounts reclassified from accumulated other comprehensive income (loss)	(314)	(686)	(194)
Net current period other comprehensive loss	(22)	89	(30)
Ending balance	$ 43	$ 65	$ (24)