Note 10 - Commitments and Contingencies (Detail) (USD $)	0 Months Ended	1 Months Ended		12 Months Ended
	Aug. 15, 2012	Jun. 25, 2012	Mar. 30, 2012	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Oct. 23, 2012 Contingent Consideration, Cash [Member]	Oct. 23, 2012 Contingent Consideration, Note Payable [Member]	Dec. 31, 2012 Other Restructuring [Member]	Dec. 31, 2011 Other Restructuring [Member]	Dec. 31, 2012 Employee Severance [Member]	Dec. 31, 2011 Employee Severance [Member]
Operating Leases, Rent Expense				$ 2,000,000	$ 434,000	$ 129,000
Payments for Legal Settlements	20,000
Loss Contingency, Damages Sought, Value			500
Loss Contingency, Damages Paid, Value		150,000
Loss Contingency, Loss in Period				1,000,000
Loss Contingency, Settlement Agreement, Consideration							400,000	600,000
Restructuring Reserve				224,324	195,202				224,000	195,000
Employee-related Liabilities											$ 0	$ 550,000