Note 7 - Components of Working Capital Accounts (Tables)

12 Months Ended

Dec. 31, 2014

Disclosure Text Block Supplement [Abstract]

Schedule of Inventory, Current [Table Text Block]

	December 31, 2014		December 31, 2013
Inventories
Work-in-progress	$	10,525	$	8,748
Finished goods		4,189		2,973
Supplies and other		4,236		4,083
	$	18,950	$	15,804
Accrued liabilities
Accrued payroll, commission and benefits	$	311,781	$	278,641
Accrued interest		3,112		3,584
Customer advances		5,176		5,505
Other		114,750		104,647
	$	434,819	$	392,377