Earnings Per Share (Anti-dilutive Securities) (Details) - shares shares in Thousands	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
Anti-dilutive securities outstanding that were excluded from the computation
Total anti-dilutive securities (in shares)	4,516	5,035
Stock options
Anti-dilutive securities outstanding that were excluded from the computation
Total anti-dilutive securities (in shares)	355	744
Warrants - employee
Anti-dilutive securities outstanding that were excluded from the computation
Total anti-dilutive securities (in shares)	1,559	1,559
Warrants - non employee
Anti-dilutive securities outstanding that were excluded from the computation
Total anti-dilutive securities (in shares)	437	567
Convertible notes
Anti-dilutive securities outstanding that were excluded from the computation
Total anti-dilutive securities (in shares)	2,165	2,165