Note 10 - Litigation (Details) (USD $)	1 Months Ended		3 Months Ended		1 Months Ended	12 Months Ended	3 Months Ended				12 Months Ended			3 Months Ended
	Jan. 31, 2014 Subsequent Event [Member] O2 Micro [Member]	May 03, 2012 Attorney Fees [Member] O2 Micro [Member]	Dec. 31, 2012 Attorney Fees [Member] Linear Technology Corporation [Member]	May 03, 2012 Taxable Costs [Member] O2 Micro [Member]	Nov. 30, 2013 O2 Micro [Member]	Dec. 31, 2013 O2 Micro [Member]	Dec. 31, 2012 Silergy [Member]	Sep. 30, 2012 Silergy [Member]	Jun. 30, 2012 Silergy [Member]	Mar. 31, 2012 Silergy [Member]	Dec. 31, 2012 Silergy [Member]	Dec. 31, 2011 Silergy [Member]	Dec. 31, 2013 Silergy [Member]	Dec. 31, 2012 Linear Technology Corporation [Member]
Note 10 - Litigation (Details) [Line Items]
Gain Contingency, Unrecorded Amount		$ 9,100,000		$ 300,000										$ 2,300,000
Proceeds from Legal Settlements	9,500,000		200,000		9,500,000	9,500,000	300,000	300,000	300,000	300,000	1,200,000	2,000,000		2,300,000
Legal Settlements, Receivables													$ 0