Business Description and Summary of Significant Accounting Policies (Details Textual)	1 Months Ended		3 Months Ended		12 Months Ended
	Feb. 14, 2018 USD ($) $ / shares shares	Jan. 17, 2018 $ / shares shares	Mar. 31, 2018 USD ($) $ / shares shares	Mar. 31, 2017 USD ($)	Dec. 31, 2017 shares	Feb. 13, 2018 shares
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount			587,251		623,251
Debt Instrument, Convertible, Conversion Price | $ / shares		$ 9.11
Debt Conversion, Converted Instrument, Amount | $			$ 71,865,000	$ 0
Debt Conversion, Converted Instrument, Shares Issued		189,645
Common Stock, Shares Authorized			50,000,000		50,000,000
Preferred Stock, Shares Authorized			10,000,000		10,000,000
Description Of Royalty Opportunities	(i) issue new securities; (ii) incur over $0.25 million of debt in a fiscal year; (iii) sell or transfer over $0.25 million of our assets or businesses or our subsidiaries in a fiscal year; (iv)acquire over $0.25 million of assets or properties in a fiscal year; (v)make capital expenditures over $0.125 million individually, or $1.5 million in the aggregate during a fiscal year; (vi) approve our annual budget; (vii) hire or terminate our chief executive officer; (viii)appoint or remove the chairperson of the Board; and (ix) make, loans to, investments in, or purchase, or permit any subsidiary to purchase, any stock or other securities in another entity in excess of $0.25 million in a fiscal year.
Noncontrolling Interest, Ownership Percentage by Parent			70.00%
Reverse Stock Split Before [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Common Stock, Shares Authorized						95,000,000
Preferred Stock, Shares Authorized						50,000,000
Reverse Stock Split After [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Common Stock, Shares Authorized						5,000,000
Preferred Stock, Shares Authorized						10,000,000
Six percentage of Convertible Senior Unsecured Notes [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Instrument, Convertible, Conversion Price | $ / shares			$ 7.20
Debt Conversion, Converted Instrument, Amount | $			$ 70,200,000
Debt Instrument, Interest Rate, Stated Percentage			6.00%
Debt Instrument, Convertible, Conversion Ratio			138.8889
Debt Instrument, Face Amount | $			$ 1,000
Debt Conversion, Converted Instrument, Shares Issued			10,401,309
Minimum [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Outstanding Common Stock In Percentage	40.00%
Securities Purchase Agreement [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Stock Issued During Period, Shares, New Issues	945,819
Shares Issued, Price Per Share | $ / shares	$ 7.20
Stock Issued During Period, Value, New Issues | $	$ 6,800,000