Note 6 - Stockholders' Equity (Details) (USD $)	3 Months Ended		12 Months Ended	3 Months Ended			1 Months Ended		3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2012	Mar. 31, 2014 2010 Stock Incentive Plan [Member]	Mar. 31, 2014 Restricted Stock [Member]	Dec. 31, 2013 Restricted Stock [Member]	Jan. 31, 2012 Non-Executive Board Members [Member]	Mar. 31, 2014 1999 Stock Incentive Plan [Member]	Mar. 31, 2014 2010 Stock Incentive Plan [Member]	Dec. 31, 2012 SWK HP Holdings LP [Member]	Dec. 31, 2012 SWK HP Holdings GP [Member]
Note 6 - Stockholders' Equity (Details) [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term				10 years
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant (in Shares)								0	2,600,000
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized					$ 100,000			$ 0	$ 100,000
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition					292 days				1 year 36 days
Share-based Goods and Nonemployee Services Transaction, Quantity of Securities Issued (in Shares)							35,000
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number (in Shares)					1,682,500	1,682,500
Share-based Compensation	76,000	60,000
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures										13,000,000	6,000,000
Noncontrolling Interest, Increase from Subsidiary Equity Issuance			$ 7,000,000