Quarterly Data (Tables)

12 Months Ended

Dec. 31, 2016

Quarterly Financial Information Disclosure [Abstract]

Quarterly Data

Quarters (000's omitted, except per share data)
2016	First		Second		Third		Fourth		Total
Net sales	$	25,288	$	40,997	$	31,913	$	26,377	$	124,574
Cost of goods sold		16,103		26,302		20,050		16,564		79,019
Net income		565		3,267		1,473		545		5,851
Basic earnings per share	$	0.17	$	0.98	$	0.44	$	0.16	$	1.76
Diluted earnings per share	$	0.16	$	0.91	$	0.40	$	0.15	$	1.64
Dividends per share	$	0.10	$	0.10	$	0.10	$	0.10	$	0.40
2015		First		Second		Third		Fourth		Total
Net sales	$	22,837	$	33,954	$	29,903	$	23,118	$	109,812
Cost of goods sold		14,402		21,419		19,578		14,852		70,251
Net income		436		2,710		1,208		440		4,794
Basic earnings per share	$	0.13	$	0.82	$	0.36	$	0.12	$	1.44
Diluted earnings per share	$	0.12	$	0.74	$	0.33	$	0.11	$	1.30
Dividends per share	$	0.09	$	0.09	$	0.09	$	0.10	$	0.37