4. Inventories

The components of inventories were as follows:


(in thousands)	December 31,		December 31,
	2016		2015

Raw materials and supplies	$	55,424	$	63,119
Work-in-process		21,558		18,210
Finished goods		246,307		245,030
Inventories	$	323,289	$	326,359

The change to the inventory reserve was as follows:


(in thousands)	2016		2015		2014

Balance at beginning of year	$	(9,470)	$	(5,697)	$	(7,112)
Charged to costs and expenses		(8,147)		(7,468)		(4,197)
Deduction for reserved inventory disposed or sold		3,542		3,153		4,860
Foreign currency translation		603		542		752
Balance at end of year	$	(13,472)	$	(9,470)	$	(5,697)

The Company identified an immaterial error in the disclosure of the inventory reserve table as presented in the prior year financial statements. The error was limited to the presentation in the footnote and had no impact on the consolidated financial statements. The Company has revised prior period amounts to correct for these errors.The revision of the 2015 disclosure resulted in a decrease in the balance at end of year of $1.0 million made up of a decrease in the beginning reserve of $2.6 million, an increase in charged to cost and expenses of $2.2 million, an increase in deduction for reserved inventory disposed or sold of $0.4 million and an increase in foreign currency translation of $0.2 million. The revision of the 2014 disclosure resulted in a decrease in the balance at end of year of $2.6 million made up of a decrease in the beginning reserve of $1.9 million, a decrease in charged to cost and expenses of $2.5 million, a decrease in deduction for reserved inventory disposed or sold of $2.3 million and an increase in foreign currency translation of $0.5 million.