Stockholders' Equity (Tables)

12 Months Ended

Dec. 31, 2013

Stockholders' Equity Note [Abstract]

Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block]

A summary of the activity of the 1998 and 2007 Plans and awards issued outside of the Plan pertaining to stock option grants is as follows:

	Shares Underlying Awards			Weighted Average Exercise Price		Aggregate Intrinsic Value ($000)		Weighted Average Remaining Contractual Life (In Years)
Awards outstanding, December 31, 2012		3,251,849		$	2.22
Options granted		1,645,534		$	2.02
Options exercised		(42,578	)	$	1.75
Options cancelled		(117,029	)	$	2.43
Options expired		(302,240	)	$	6.01
Awards outstanding, December 31, 2013		4,435,536		$	1.89	$	1,806		4.70
Awards vested and expected to vest at December 31, 2013		4,011,951		$	1.88	$	1,654		4.68
Awards exercisable at December 31, 2013		1,202,084		$	1.90	$	557		4.36

Schedule of Share-based Compensation, Restricted Stock Units Award Activity [Table Text Block]

A summary of the activity of the 1998 and 2007 Plans pertaining to grants of restricted stock units is as follows:

	Shares Underlying Awards		Weighted Average Exercise Price		Aggregate Intrinsic Value ($000)		Weighted Average Remaining Contractual Life (In Years)
Awards outstanding, December 31, 2012	913,027		$	—
Restricted stock units granted	1,338,018		$	—
Restricted stock units settled by delivery of Common Stock upon vesting	(751,371	)	$	—
Restricted stock units cancelled	(21,227	)	$	—
Awards outstanding, December 31, 2013	1,478,447		$	—	$	3,341		3.74
Awards vested and expected to vest at December 31, 2013	1,406,822		$	—	$	3,179		3.06

Schedule Of Unvested Share-Based Payment Awards [Table Text Block]

A summary of the status of the Company’s unvested share-based payment awards as of December 31, 2013 and changes in the year then ended is as follows:

Unvested Awards	Awards			Weighted Average Grant Date Fair Value
Shares underlying awards unvested at December 31, 2012	3,834,606		$	1.05
Shares underlying options granted	1,645,534		$	0.63
Shares underlying restricted stock units granted	1,338,018		$	2.06
Shares underlying options vested	(1,216,632	)	$	0.51
Shares underlying restricted stock units issued	(751,371	)	$	2.90
Shares underlying unvested options cancelled	(117,029	)	$	0.79
Shares underlying unvested restricted stock units cancelled	(21,227	)	$	3.25
Shares underlying awards unvested at December 31, 2013	4,711,899		$	1.03