Note 8 - Employee Benefit Plans (Detail) - Fair Value of Company's Defined Benefit Retirment Plan (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011	Jun. 30, 2011	Jun. 30, 2010
Cash and cash equivalents		$ 383	$ 7,603	$ 6,369
Total	1,720	3,278
Cash and Cash Equivalents [Member] | Fair Value, Inputs, Level 1 [Member]
Cash and cash equivalents	724	159
Cash and Cash Equivalents [Member]
Cash and cash equivalents	724	159
Other Assets Fair Value [Member] | Fair Value, Inputs, Level 1 [Member]
Other	167	144
Other Assets Fair Value [Member]
Other	167	144
Domestic [Member] | Fair Value, Inputs, Level 1 [Member]
Equity securities	487	1,624
Investment grade bonds	207	626
Domestic [Member]
Equity securities	487	1,624
Investment grade bonds	207	626
International [Member] | Fair Value, Inputs, Level 1 [Member]
Equity securities	135	560
Investment grade bonds		165
International [Member]
Equity securities	135	560
Investment grade bonds		165
Fair Value, Inputs, Level 1 [Member]
Total	$ 1,720	$ 3,278