Shareholders' Equity (Tables)

3 Months Ended

Mar. 31, 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 three months endedMarch 31, 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	1,169,200		$	7.70				2,722		$	12.26
Exercised	(12,800	)	$	5.58				(250,000	)	$	5.10
Forfeited	(109,329	)	$	6.97				(100,108	)	$	70.00
Expired	(66,565	)	$	14.77				(59,852	)	$	57.76
Outstanding at March 31, 2014	3,912,697		$	10.22	7.4	$	1,896.7	4,491,028		$	15.39	2.4	$	1,661.5
Vested at March 31, 2014 or expected to vest in the future	3,596,457		$	10.46	7.2	$	1,848.9	4,491,028		$	15.39	2.4	$	1,661.5
Vested at March 31, 2014	2,520,755		$	11.50	6.5	$	1,600.9	4,473,306		$	15.42	2.3	$	1,661.5

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

During the three months endedMarch 31, 2014 and 2013, the Company issued warrants for services as follows ($ in thousands, except share data):

	Three Months Ended March 31,
	2014		2013
Number of Common Stock Purchase Warrants Issued	—		3,913
Value of Common Stock Purchase Warrants Issued	$	—	$	14.9

Restricted Stock [Table Text Block]

During the three months endedMarch 31, 2014 and 2013, the Company issued restricted stock for services as follows ($ in thousands, except share data):

	Three Months Ended March 31,
	2014		2013
Number of Restricted Stock Issued	329,698		177,492
Value of Restricted Stock Issued	$	2,511.7	$	1,127.9