Stockholders' Equity, Stock Option (Details) (USD $)	3 Months Ended		12 Months Ended	3 Months Ended	0 Months Ended
	Mar. 31, 2014	Mar. 31, 2015	Dec. 31, 2014	Jun. 30, 2014	Feb. 10, 2015
Compensation cost not yet recognized [Abstract]
Stock-based compensation expense	$ 193,000
Previously recorded stock-based compensation expense reversed	(505,000)
Stock Options [Member]
Stock option activity, number of shares [Roll Forward]
Outstanding options, beginning of period (in shares)		3,516,037
Granted (in shares)		430,000
Exercised (in shares)		0
Forfeited (in shares)		(235,292)
Outstanding options, end of period (in shares)		3,710,745	3,516,037
Options vested and expected to vest (in shares)		3,532,586
Exercisable (in shares)		1,642,453
Weighted average exercise price per share [Roll Forward]
Outstanding options, beginning of period (in dollars per share)		$ 3.16
Granted (in dollars per share)		$ 1.85
Exercised (in dollars per share)		$ 0
Forfeited (in dollars per share)		$ 3.17
Outstanding options, end of period (in dollars per share)		$ 3.01	$ 3.16
Options vested and expected to vest (in dollars per share)		$ 3.03
Exercisable (in dollars per share)		$ 3.63
Additional disclosures [Abstract]
Options outstanding, weighted average remaining contractual term		6 years 7 months 10 days	6 years 3 months 11 days
Options vested and expected to vest, weighted average remaining contractual term		6 years 5 months 23 days
Options exercisable, weighted average remaining contractual term		3 years 9 months 11 days
Options outstanding, aggregate intrinsic value		0	3,000
Options vested and expected to vest, aggregate intrinsic value		0
Options exercisable, aggregate intrinsic value		0
Options exercised in period, total intrinsic value	6,000	0
Fair value of options vested	207,000	134,000
Compensation cost not yet recognized [Abstract]
Unrecognized compensation cost related to stock options		$ 1,700,000
Weighted average period of recognition for unrecognized compensation cost		2 years
Stock options granted (in shares)		430,000
Extension of the post-termination exercise period for outstanding stock option grants		90 days
Stock Options [Member] | Minimum [Member]
Compensation cost not yet recognized [Abstract]
Estimated grant-date fair value (in dollars per share)				$ 1.27
Derived service period				1 year 10 months 13 days
Stock Options [Member] | Maximum [Member]
Compensation cost not yet recognized [Abstract]
Estimated grant-date fair value (in dollars per share)				$ 1.33
Derived service period				4 years 6 months 7 days
Stock Options [Member] | President and Chief Executive Officer [Member]
Stock option activity, number of shares [Roll Forward]
Granted (in shares)				750,000
Compensation cost not yet recognized [Abstract]
Stock options granted (in shares)				750,000
Stock Options [Member] | Key Executives [Member]
Stock option activity, number of shares [Roll Forward]
Granted (in shares)				112,500	425,000
Compensation cost not yet recognized [Abstract]
Stock options granted (in shares)				112,500	425,000
Vesting period					3 years