Note 9 - Commitments and Contingencies (Detail) - Commitments (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012
Total	$ 16,707
2013	16,454
2014	206
2015	45
2016	2
2017	0
Operating Lease Expense [Member]
Total	1,165
2013	912
2014	206
2015	45
2016	2
2017	0
Purchase Commitment [Member]
Total	15,542
2013	15,542
2014	0
2015	0
2016	0
2017	$ 0