Note 3 - Supplemental Balance Sheet Information (Tables)

12 Months Ended

Dec. 31, 2013

Supplemental Balance Sheet Data [Abstract]

Allowance for Doubtful Accounts [Table Text Block]

Activity in the allowance for doubtful accounts is summarized as follows for the years ended December 31 (in thousands):

	2013			2012			2011
Balance, at beginning of year	$	2,953		$	3,077		$	2,536
Charged to expense	1,043			428			397
Write-offs and adjustments	(555		)	(552		)	144
Balance, at end of year	$	3,441		$	2,953		$	3,077

Costs in Excess of Billings and Billings in Excess of Costs [Table Text Block]

Costs and estimated earnings on uncompleted contracts consisted of the following at December 31 (in thousands):

	2013			2012
Costs incurred on uncompleted contracts	$	740,403		$	664,662
Estimated earnings to date	141,413			183,850
Subtotal	881,816			848,512
Less – billings to date	(826,795		)	(812,324		)
Total	$	55,021		$	36,188
Included in the accompanying balance sheets:
Costs and estimated earnings in excess of billings	79,999			67,740
Billings in excess of costs and estimated earnings	(24,978		)	(31,552		)
Total	$	55,021		$	36,188

Schedule of Inventory, Current [Table Text Block]

Inventories are summarized as follows at December 31 (in thousands):

	2013		2012
Raw materials and supplies	$	19,680	$	16,250
Work-in-process	8,217		8,876
Finished products	12,518		18,056
Construction materials	18,353		15,941
Total	$	58,768	$	59,123

Property, Plant and Equipment [Table Text Block]

Property, plant and equipment consisted of the following at December 31 (in thousands):

	Estimated Useful Lives (Years)			2013			2012
Land and land improvements				$	11,964		$	11,437
Buildings and improvements	5	—	40	63,870			64,604
Machinery and equipment	4	—	10	185,307			177,383
Furniture and fixtures	3	—	10	25,848			16,933
Autos and trucks	3	—	10	52,145			50,119
Construction in progress				31,012			35,507
Subtotal				370,146			355,983
Less – Accumulated depreciation				(187,843		)	(172,820		)
Total				$	182,303		$	183,163

Schedule of Accrued Liabilities [Table Text Block]

Accrued expenses consisted of the following at December 31 (in thousands):

	2013		2012
Vendor and other accrued expenses	$	36,778	$	32,394
Estimated casualty and healthcare liabilities	13,775		12,899
Job costs	13,843		14,077
Accrued compensation	15,942		12,943
Income tax payable and deferred income taxes	10,628		7,267
Total	$	90,966	$	79,580