Note 18 - Foreign Operations and Sales (Tables)

12 Months Ended

Dec. 31, 2015

Notes Tables

Schedule of Revenue from External Customers and Long-Lived Assets, by Geographical Areas [Table Text Block]

	Domestic		Foreign		Total
2015
Gross sales	$	237,146	$	196,710	$	433,856
Long-lived assets		93,142		132,099		225,241
2014
Gross sales	$	186,735	$	187,415	$	374,150
Long-lived assets		64,995		151,386		216,381
2013
Gross sales	$	153,202	$	164,010	$	317,212
Long-lived assets		59,496		155,151		214,647

Schedule of Revenue from External Customers Attributed to Foreign Countries by Geographic Area [Table Text Block]

	2015		2014		2013
Europe	$	280,593	$	232,894	$	210,463
North America		127,024		117,477		86,974
Asia		14,024		12,865		13,800
Other		12,215		10,914		5,975
Total	$	433,856	$	374,150	$	317,212