Note 2 - Summary Of Significant Accounting Policies (Detail) - Warranty Liabilities (USD $) In Thousands, unless otherwise specified	6 Months Ended		12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Jun. 30, 2012
Balance at beginning of the period	$ 1,121	$ 662	$ 662
Additions charged to expense	640	680	2,645
Deductions for repairs and replacements	(558)	(610)	(2,186)
Balance at end of the period	$ 1,203	$ 732	$ 1,121