Note 13 - Warrants (Details) - Summary of Waived Warrants (USD $)					6 Months Ended			6 Months Ended			6 Months Ended			6 Months Ended
	Jun. 30, 2014	Jan. 15, 2014	Dec. 31, 2013	Feb. 26, 2013	Jun. 30, 2014 Waived Warrants [Member] Expiration Date Range 1 [Member]	Jun. 30, 2013 Waived Warrants [Member] Expiration Date Range 1 [Member]	Jun. 03, 2013 Waived Warrants [Member] Expiration Date Range 1 [Member]	Jun. 30, 2014 Waived Warrants [Member] Expiration Date Range 2 [Member]	Jun. 30, 2013 Waived Warrants [Member] Expiration Date Range 2 [Member]	Jun. 03, 2013 Waived Warrants [Member] Expiration Date Range 2 [Member]	Jun. 30, 2014 Waived Warrants [Member] Expiration Date Range 3 [Member]	Jun. 30, 2013 Waived Warrants [Member] Expiration Date Range 3 [Member]	Jun. 03, 2013 Waived Warrants [Member] Expiration Date Range 3 [Member]	Jun. 30, 2014 Waived Warrants [Member] Expiration Date Range 4 [Member]	Jun. 30, 2013 Waived Warrants [Member] Expiration Date Range 4 [Member]	Jun. 03, 2013 Waived Warrants [Member] Expiration Date Range 4 [Member]
Class of Warrant or Right [Line Items]
Shares of Common Stock Associated with the Waived Warrants (in Shares)	5,069,815		3,268,013		1,323,496			31,243			12,628			31,448
Expiration Date of Waived Warrants					Feb. 26, 2018			Jul. 25, 2016			Jul. 06, 2016			Nov. 25, 2017
Strike Price	$ 8.18	$ 4.10	$ 10.43	$ 5.31	$ 5.31			$ 18.99			$ 14.09			$ 12.47
Per Share Fair Value						$ 3.33	$ 6.60		$ 1.93	$ 4.41		$ 2.15	$ 4.81		$ 2.66	$ 5.56