Note 7 - Debt - Outstanding Letters of Credit (Details) - Letter of Credit [Member] - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Mt Laurel [Member]
Line of Credit, Issue Date	Mar. 29, 2010
Line of Credit, ExpirationDate	Apr. 01, 2016
Lease Expiration Date	Apr. 30, 2021
Letters of Credit Amount Outstanding	$ 250	$ 250
Mansfield [Member]
Line of Credit, Issue Date	Oct. 27, 2010
Line of Credit, ExpirationDate	Nov. 08, 2016
Lease Expiration Date	Aug. 31, 2021
Letters of Credit Amount Outstanding	$ 100	100
Letters of Credit Amount Outstanding	$ 350	$ 350