Note 5 - Costs and Estimated Earnings and Billings on Uncompleted Contracts (Details) - Excess Billings Over Costs and Estimated Earnings on Uncompleted Contracts (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2013	Dec. 31, 2012
Excess Billings Over Costs and Estimated Earnings on Uncompleted Contracts [Abstract]
Costs incurred and estimated earnings on uncompleted contracts	$ 1,334,322	$ 1,361,973
Billings on uncompleted contracts	(1,354,214)	(1,360,299)
Excess of costs incurred and estimated earnings over billings (excess of billings over costs incurred and estimated earnings) on uncompleted contracts	$ (19,892)	$ 1,674

Note 5 - Costs and Estimated Earnings and Billings on Uncompleted Contracts (Details) - Excess Billings Over Costs and Estimated Earnings on Uncompleted Contracts (USD $)
In Thousands, unless otherwise specified

12 Months Ended

Dec. 31, 2013

Dec. 31, 2012

Excess Billings Over Costs and Estimated Earnings on Uncompleted Contracts [Abstract]

Costs incurred and estimated earnings on uncompleted contracts

$ 1,334,322

$ 1,361,973

Billings on uncompleted contracts

(1,354,214)

(1,360,299)

Excess of costs incurred and estimated earnings over billings (excess of billings over costs incurred and estimated earnings) on uncompleted contracts

$ (19,892)

$ 1,674