Warrants (Summary of Warrants Outstanding) (Details)	Mar. 31, 2017 $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares, Balance at March 31, 2017 | shares	775,137
Weighted Average Exercise Price, Outstanding at March 31, 2017 | $ / shares	$ 22.86
Range 7.50 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares, Balance at March 31, 2017 | shares	533,500
Weighted Average Exercise Price, Outstanding at March 31, 2017 | $ / shares	$ 7.50
Range 22.50 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares, Balance at March 31, 2017 | shares	106,383
Weighted Average Exercise Price, Outstanding at March 31, 2017 | $ / shares	$ 22.50
Range 40.50 - 82.50 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares, Balance at March 31, 2017 | shares	69,406
Weighted Average Exercise Price, Outstanding at March 31, 2017 | $ / shares	$ 58.16
Range 107.50 - 120.00 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares, Balance at March 31, 2017 | shares	65,848
Weighted Average Exercise Price, Outstanding at March 31, 2017 | $ / shares	$ 110.73