Note 7 - Long-Term Debt (Detail) (USD $)	0 Months Ended	7 Months Ended
	Mar. 15, 2012	Aug. 05, 2011	Mar. 31, 2013	Dec. 31, 2012
Debt Instrument, Maturity Date		Aug. 05, 2014
Debt Instrument, Interest Rate Terms		Interest on the unpaid principal balance on this facility accrues at either (i) the London Interbank Offered Rate ("LIBOR") plus 1.75% or (ii) the bank's prime rate minus 0.50%.
Debt Instrument, Interest Rate, Stated Percentage		3.045%
Debt Instrument, Collateral		Borrowings under this term loan were additionally collateralized by $1 million of restricted cash deposits, provided that, so long as no event of default has occurred and is then continuing, HSBC will release $200,000 of the collateral on each anniversary of the closing date.
Restricted Cash and Cash Equivalents			$ 800,000
Purchase Price for Property Exclusive of Closing Costs	7,200,000
Line of Credit Facility, Interest Rate at Period End			1.9532%	1.959%
LIBOR [Member] | Loans Payable [Member]
Debt Instrument, Basis Spread on Variable Rate	1.75%
HSBC Bank [Member] | Revolving Credit Facility [Member]
Line of Credit Facility, Maximum Borrowing Capacity		7,000,000
Line of Credit Facility, Remaining Borrowing Capacity			7,000,000	7,000,000
HSBC Bank [Member] | Five-Year Term Loan [Member]
Debt Instrument, Face Amount		2,100,000
Loans Payable to Bank			1,435,000	1,540,000
HSBC Bank [Member]
Line of Credit Facility, Maximum Borrowing Capacity		9,100,000
HSBC Bank Mortgage Loan [Member]
Debt Instrument, Face Amount	$ 6,000,000