Note 6 - Debt (Details) - Outstanding Letters of Credit (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Dec. 31, 2013
Note 6 - Debt (Details) - Outstanding Letters of Credit [Line Items]
Letters of Credit Amount Outstanding	$ 450	$ 450
Lease Expiration Date: 4/30/2021 [Member] | Mt. Laurel [Member] | Letter of Credit Expiration Date: 3/31/2015 [Member] | Original L/C Issue Date: 3/29/2010 [Member]
Note 6 - Debt (Details) - Outstanding Letters of Credit [Line Items]
Original L/C Issue Date	Mar. 29, 2010
L/C Expiration Date	Mar. 31, 2015
Lease Expiration Date	Apr. 30, 2021
Letters of Credit Amount Outstanding	250	250
Lease Expiration Date: 8/23/2021 [Member] | Mansfield [Member] | Letter of Credit Expiration Date: 11/08/2014 [Member] | Original L/C Issue Date: 10/27/2010 [Member]
Note 6 - Debt (Details) - Outstanding Letters of Credit [Line Items]
Original L/C Issue Date	Oct. 27, 2010
L/C Expiration Date	Nov. 08, 2014
Lease Expiration Date	Aug. 23, 2021
Letters of Credit Amount Outstanding	$ 200	$ 200