Note 8 - Income Taxes (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Minimum
Operating Loss Carryforwards, Expiration Date	Dec. 31, 2018
Maximum
Operating Loss Carryforwards, Expiration Date	Dec. 31, 2032
Internal Revenue Service (IRS)
Operating Loss Carryforwards	165,600
Internal Revenue Service (IRS) | Expired
Operating Loss Carryforwards	0	2,541
Internal Revenue Service (IRS) | Expire 2015-2016
Operating Loss Carryforwards	800
State and Local Jurisdiction | Expire On Various Dates
Operating Loss Carryforwards	142,200