Note 3 - Details of Selected Balance Sheet Accounts (Tables)

9 Months Ended

Sep. 30, 2016

Notes Tables

Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block]

	September 3 0 ,			D ecember 31,
	201 6			201 5
Accounts receivable, net:
Trade	$	160,889		$	210,313
Unbilled revenue		98,956			124,331
Other		3,847			5,738
Total accounts receivable		263,692			340,382
Allowance for doubtful accounts		(7,110	)		(6,888	)
	$	256,582		$	333,494

Schedule of Inventory, Current [Table Text Block]

	September 3 0 ,			D ecember 31,
	201 6			201 5
Inventories, net:
Finished goods and purchased products	$	90,885		$	97,362
Work in process		39,408			42,182
Raw materials		76,674			86,236
Total inventories		206,967			225,780
Allowance for excess, damaged, or obsolete inventory		(13,638	)		(12,898	)
	$	193,329		$	212,882

Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Table Text Block]

	September 3 0 ,		D ecember 31,
	2016		2015
Prepaid expenses and other current assets:
Prepayments to vendors	$	2,555	$	5,266
Prepaid insurance		2,356		4,827
Income tax asset		645		11,519
Prepaid non-income taxes		1,875		1,680
Prepaid rent/leases		802		1,108
Other		3,179		4,724
	$	11,412	$	29,124

Property, Plant and Equipment [Table Text Block]

	Estimated				September 30,			D ecember 31,
	Useful Life				2016			201 5
Property, plant and equipment, net:
Land					$	27,919		$	26,334
Buildings and leasehold improvements	3	-	40	years		189,927			185,274
Machinery and equipment	2	-	28	years		448,648			462,054
Completion services equipment	2	-	10	years		435,169			421,386
Office furniture and equipment	3	-	10	years		41,549			32,200
Vehicles	2	-	10	years		122,415			125,211
Construction in progress						82,114			92,800
Total property, plant and equipment						1,347,741			1,345,259
Accumulated depreciation						(770,443	)		(706,534	)
					$	577,298		$	638,725

Schedule of Accounts Payable and Accrued Liabilities [Table Text Block]

	September 3 0 ,		D ecember 31,
	201 6		201 5
Accrued liabilities:
Accrued compensation	$	21,461	$	19,402
Insurance liabilities		7,789		9,855
Accrued taxes, other than income taxes		7,151		3,619
Accrued leasehold restoration liability		2,593		3,389
Accrued product warranty reserves		2,032		2,638
Accrued commissions		1,228		2,033
Accrued claims		842		896
Other		6,397		7,468
	$	49,493	$	49,300