Note 5 - Long-Term Debt and Credit Facility (Detail) - Long-Term Debt, Term Note and Notes Payable (Parentheticals)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Term note, current annualized rate	2.56%
Term Loan [Member]
Term note, current annualized rate	2.53%	2.53%
Notes Payable, Other Payables [Member]
Other notes, interest rate, minimum	2.50%	2.50%
Other notes, interest rate, maximum	5.80%	5.80%