Note 7 - Balance Sheet Component (Details) - Accrued Liabilities (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013		Dec. 31, 2012
Accrued Liabilities [Abstract]
Customer deposits			$ 3,592
Capital lease obligation—current portion (1)		[1]	689	[1]
Product warranty liability—current portion (2)	200	[2]	200	[2]
Other	541		2,055
	$ 741		$ 6,536

[1] The noncurrent portion of the capital lease obligation is recorded in financing and capital lease obligations, net of current portion.

[2] The noncurrent portion of the product warranty liability is recorded in other liabilities.