Loss Per Share - Antidilutive Securities (Details) - shares	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Shares Underlying Out of the Money Options Outstanding [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from EPS, shares	1,482,614	844,000	1,518,957	1,094,000
Shares Underlying In The Money Stock Options Outstanding [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from EPS, shares	1,654,200	1,553,717	1,442,200	1,241,719
Shares Underlying Out of the Money Warrants Outstanding [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from EPS, shares	1,201,698	0	1,201,698	600,849
Shares Underlying in the Money Warrants Outstanding [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from EPS, shares	4,831,352	4,831,352	4,831,352	4,831,352
Performance based options
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from EPS, shares	100,000	0	100,000	0