Note 7 - Accrued Restructuring Liabilities (Details) - USD ($) $ in Thousands	3 Months Ended				9 Months Ended		12 Months Ended
	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015	Sep. 30, 2015
Employee Severance [Member]
Balance at beginning of period, October 1, 2015	$ 395	$ 505
Charges to operations			505
Cash disbursements	(101)	(110)
Balance at end of period, December 31, 2015	294	395	505		294
Facility Closing [Member]
Balance at beginning of period, October 1, 2015	343	239	307		307
Charges to operations		158
Cash disbursements	(59)	(54)	(68)
Balance at end of period, December 31, 2015	284	343	239		284		307
Balance at beginning of period, October 1, 2015	738	744	307		307
Charges to operations	16	158	505		795		496
Cash disbursements	(160)	(164)	(68)
Balance at end of period, December 31, 2015	$ 578	$ 738	$ 744		$ 578		$ 307