Shareholders' Equity (Tables)

6 Months Ended

Jun. 30, 2014

Shareholders’ Equity [Abstract]

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

The following table summarizes the activity for stock options and warrants for the six months endedJune 30, 2014:

	Stock Options							Warrants
	Shares		Weighted Average Exercise Price		Weighted Average Remaining Contractual Term (Years)	Aggregate Intrinsic Value (In Thousands)		Shares		Weighted Average Exercise Price		Weighted Average Remaining Contractual Term (Years)	Aggregate Intrinsic Value (In Thousands)
Outstanding at December 31, 2013	2,932,191		$	11.19	6.8	$	1,658.1	4,898,266		$	16.50	2.6	$	1,811.0
Changes during the period:
Granted	1,653,325		$	7.05				2,722		$	12.26
Exercised	(41,136	)	$	5.60				(265,250	)	$	5.18
Forfeited	(189,454	)	$	6.34				(100,108	)	$	70.00
Expired	(150,656	)	$	15.78				(911,674	)	$	23.97
Outstanding at June 30, 2014	4,204,270		$	9.67	7.6	$	1,657.4	3,623,956		$	13.96	2.6	$	1,080.2
Vested at June 30, 2014 or expected to vest in the future	3,891,887		$	9.86	7.4	$	1,592.8	3,623,956		$	13.96	2.6	$	1,080.2
Vested at June 30, 2014	2,533,802		$	11.16	6.5	$	1,123.2	3,611,456		$	13.98	2.6	$	1,080.2

Schedule of Stockholders' Equity Note, Warrants or Rights [Table Text Block]

During the six months endedJune 30, 2014 and 2013, the Company issued warrants for services as follows ($ in thousands, except share data):

	Six Months Ended June 30,
	2014		2013
Number of Common Stock Purchase Warrants Issued	—		20,407
Value of Common Stock Purchase Warrants Issued	$	—	$	71.6

Restricted Stock [Table Text Block]

During the six months endedJune 30, 2014 and 2013, the Company issued restricted stock for services as follows ($ in thousands, except share data):

	Six Months Ended June 30,
	2014		2013
Number of Restricted Stock Issued	456,709		304,402
Value of Restricted Stock Issued	$	3,389.7	$	1,858.3