Basis Of Presentation And Significant Accounting Policies - Securities Available for Sale (Details) (Corporate Debt Securities, USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Amortized Cost	$ 7,954	$ 7,675
Available-for-sale Debt Securities, Accumulated Gross Unrealized Gain, before Tax	0	5
Available-for-sale Debt Securities, Accumulated Gross Unrealized Loss, before Tax	(19)	(7)
Less than 1 year [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Amortized Cost	4,650	2,176
Available-for-sale Securities, Unrealized Gains	0	5
Available-for-sale Securities, Unrealized Losses	(5)	0
1-3 years [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Amortized Cost	3,304	5,499
Available-for-sale Debt Securities, Accumulated Gross Unrealized Gain, before Tax	0	0
Available-for-sale Debt Securities, Accumulated Gross Unrealized Loss, before Tax	(14)	(7)
Level 2
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Fair Value	7,935	7,673
Level 2 \| Less than 1 year [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Fair Value	4,645	2,181
Level 2 \| 1-3 years [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Fair Value	$ 3,290	$ 5,492

Amount before tax of unrealized gain in accumulated other comprehensive income (AOCI) on investments in debt securities classified as available-for-sale.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 320

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (b)

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Amount before tax of unrealized loss in accumulated other comprehensive income (AOCI) on investments in debt securities classified as available-for-sale.

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This item represents the cost of debt securities, which are categorized neither as held-to-maturity nor trading, net of adjustments including accretion, amortization, collection of cash, previous other-than-temporary impairments recognized in earnings (less any cumulative-effect adjustments recognized, as defined), and fair value hedge accounting adjustments, if any.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

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-Topic 210

-SubTopic 10

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Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading.

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Amount before tax of unrealized loss in accumulated other comprehensive income (AOCI) on investments in debt and equity securities classified as available-for-sale.

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