Stockholders' Equity (Schedule Of Changes in Accumulated Other Comprehensive Income by Component Net of Tax) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	$ 38	$ 69	$ 4
Other comprehensive (loss) income before reclassifications	418	283	751
Amounts reclassified from accumulated other comprehensive income (loss)	(453)	(314)	(686)
Net current period other comprehensive loss	(35)	(31)	65
Ending balance	3	38	69
Gains and losses on available for sale securities [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	(5)	4	28
Other comprehensive (loss) income before reclassifications	(35)	(9)	(24)
Amounts reclassified from accumulated other comprehensive income (loss)	0	0	0
Net current period other comprehensive loss	(35)	(9)	(24)
Ending balance	(40)	(5)	4
Gains and losses on derivatives [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	43	65	(24)
Other comprehensive (loss) income before reclassifications	453	292	775
Amounts reclassified from accumulated other comprehensive income (loss)	(453)	(314)	(686)
Net current period other comprehensive loss	0	(22)	89
Ending balance	$ 43	$ 43	$ 65