Fair Value Measurements (Schedule Of Assets Or Liabilities Measured On Recurring Basis) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Oct. 01, 2013
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fair value, beginning of period	$ 15,510	$ 14,115	$ 5,907	$ 15,935	$ 11,441
Net unrealized (gains) losses, included in other income (loss)	4,615	(2,674)	14,218	(4,494)
Purchases and issuances	0	0	151	0
Sales and settlements, included in other income (loss)	0	0	(151)	0
Gross transfers in	0	0	0	0
Gross transfers out	0	0	0	0
Fair value, end of period	20,125	11,441	20,125	11,441	11,441
Changes in realized (gains) losses included in income on instruments held at end of period	0	0	0	0
Changes in unrealized (gains) losses included in income on instruments held at end of period	4,615	(2,674)	14,218	(4,494)
Series C Preferred Embedded Derivative [Member]
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fair value, beginning of period	10,297	6,588	3,761	7,205	5,914
Net unrealized (gains) losses, included in other income (loss)	3,277	(674)	9,813	(1,291)
Purchases and issuances	0	0	0	0
Sales and settlements, included in other income (loss)	0	0	0	0
Gross transfers in	0	0	0	0
Gross transfers out	0	0	0	0
Fair value, end of period	13,574	5,914	13,574	5,914	5,914
Changes in realized (gains) losses included in income on instruments held at end of period	0	0	0	0
Changes in unrealized (gains) losses included in income on instruments held at end of period	3,277	(674)	9,813	(1,291)
Warrant derivative [Member]
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fair value, beginning of period	5,213	7,527	2,146	8,730	5,527
Net unrealized (gains) losses, included in other income (loss)	1,338	(2,000)	4,405	(3,203)
Purchases and issuances	0	0	0	0
Sales and settlements, included in other income (loss)	0	0	0	0
Gross transfers in	0	0	0	0
Gross transfers out	0	0	0	0
Fair value, end of period	6,551	5,527	6,551	5,527	5,527
Changes in realized (gains) losses included in income on instruments held at end of period	0	0	0	0
Changes in unrealized (gains) losses included in income on instruments held at end of period	1,338	(2,000)	4,405	(3,203)
Conversion Loan Embedded Derivative [Member]
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fair value, beginning of period			0	0	0
Net unrealized (gains) losses, included in other income (loss)			0	0
Purchases and issuances			151	0
Sales and settlements, included in other income (loss)			(151)	0
Gross transfers in			0	0
Gross transfers out			0	0
Fair value, end of period	0		0		0
Changes in realized (gains) losses included in income on instruments held at end of period			0	0
Changes in unrealized (gains) losses included in income on instruments held at end of period			$ 0	$ 0