Note 3 - Notes Payable (Detail) (USD $)	3 Months Ended		3 Months Ended		3 Months Ended		3 Months Ended
	Mar. 31, 2013	Dec. 19, 2008	Mar. 31, 2013 Term Loan MIV Acquisition [Member]	Jul. 31, 2010 Term Loan MIV Acquisition [Member]	Mar. 31, 2013 Term Loan OCS Acquisition [Member]	Jul. 31, 2010 Term Loan OCS Acquisition [Member]	Mar. 31, 2013 Revolving Credit Facility [Member]
Debt Instrument, Face Amount		$ 9,000,000		$ 6,900,000		$ 10,000,000
Debt Instrument, Periodic Payment			80,104		121,190
Debt Instrument Balloon Payment Amount			4,800,000		6,700,000
Debt Instrument, Interest Rate, Stated Percentage			3.79%		3.79%
Notes Payable			5,000,000		7,100,000
Line of Credit Facility, Maximum Borrowing Capacity							6,500,000
Line of Credit Facility, Borrowing Capacity, Description	Borrowings under the revolving credit note bear interest at a variable annual rate, with three rate options at the discretion of management as follows:(1) 2.5% plus the daily reset one-month London Interbank Offered Rate ("LIBOR") or (2) 2.2% plus the one-, two-, three-, six- or twelve-month LIBOR rate, or (3) the bank's Money Market Loan Rate.						75%
Line of Credit Facility, Remaining Borrowing Capacity							$ 6,500,000