Inventories:

3 Months Ended

Mar. 31, 2021

Inventory Disclosure [Abstract]

Inventories [Text Block]

Inventories

    Inventories are stated at the lower of cost or net realizable value with cost determined using the first-in, first-out method. Inventory costs consist of those costs directly attributable to products prior to sale including among other things raw material, labor and overhead. Inventories consisted of the following (in thousands): 

	March 31, 2021		December 31, 2020
Raw materials	$	122,703	$	126,499
Work in process	39,713		33,053
Finished goods	137,670		155,376
Total inventories	$	300,086	$	314,928