Note 19 - Foreign Operations and Sales (Tables)

12 Months Ended

Dec. 31, 2016

Notes Tables

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

	Domestic		Foreign		Total
2016
Gross sales	$	270,773	$	220,765	$	491,538
Long-lived assets		136,692		135,523		272,215
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

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

	2016		2015		2014
Europe	$	321,525	$	280,593	$	232,894
North America		138,328		127,024		117,477
Asia		17,996		14,024		12,865
Other		13,689		12,215		10,914
Total	$	491,538	$	433,856	$	374,150