Note 4 - Stockholders' Equity (Detail) (USD $)	1 Months Ended	3 Months Ended						1 Months Ended
	Dec. 31, 2012	Mar. 31, 2013	Mar. 31, 2012	Mar. 31, 2013 2010 Stock Incentive Plan [Member]	Mar. 31, 2013 Restricted Stock [Member]	Mar. 31, 2012 Restricted Stock [Member]	Dec. 31, 2012 Restricted Stock [Member]	Jan. 31, 2012 Non-Executive Board Members [Member]	Dec. 31, 2012 SWK HP Holdings LP [Member]	Dec. 31, 2012 SWK HP Holdings GP [Member]
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)				2,600,000
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized		$ 200,000
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, Period for Recognition		1 year 255 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		1,647,500
Share-based Compensation		60,000	34,000		60,000	34,000
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures									13,000,000	6,000,000
Noncontrolling Interest, Increase from Equity Issuance or Sale of Parent Equity Interest	$ 7,000,000