Note 11 - Liabilities (Detail) - Accrued and Other Liabilities: (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Accrued and Other Liabilities	$ 6,337	$ 3,826
Tax Related [Member]
Accrued and Other Liabilities	1,197	56
Accrued compensation and related taxes [Member]
Accrued and Other Liabilities	3,658	1,593
Deferred revenue [Member]
Accrued and Other Liabilities	299	278
Professional services [Member]
Accrued and Other Liabilities	282	485
Accrued fuel and rig-related taxes [Member]
Accrued and Other Liabilities	162
Accrued workers compensation [Member]
Accrued and Other Liabilities		1,233
Other accrued expense [Member]
Accrued and Other Liabilities	$ 739	$ 181