CONSOLIDATED BALANCE SHEETS - USD ($)	Jun. 30, 2021	Dec. 31, 2020
ASSETS
Cash and cash equivalents	$ 121,015,000	$ 84,496,000
Accounts receivable, net of allowance for doubtful accounts of $6,405 in 2021 and $5,181 in 2020	180,674,000	161,771,000
Inventories	81,198,000	82,918,000
Income taxes receivable	51,002,000	82,943,000
Prepaid expenses	5,659,000	9,124,000
Assets held for sale	4,032,000	4,032,000
Other current assets	2,648,000	3,075,000
Total current assets	446,228,000	428,359,000
Property, plant and equipment, less accumulated depreciation of $796,143 in 2021 and $790,712 in 2020	251,396,000	264,411,000
Operating lease right-of-use assets	23,321,000	27,270,000
Goodwill	32,150,000	32,150,000
Other assets	37,111,000	38,315,000
Total assets	790,206,000	790,505,000
LIABILITIES AND STOCKHOLDERS' EQUITY
Accounts payable	53,524,000	41,080,000
Accrued payroll and related expenses	21,079,000	18,428,000
Accrued insurance expenses	5,007,000	5,489,000
Accrued state, local and other taxes	3,879,000	2,788,000
Income taxes payable	1,418,000	1,115,000
Current portion of operating lease liabilities	7,909,000	9,192,000
Other accrued expenses	3,407,000	1,473,000
Total current liabilities	96,223,000	79,565,000
Long-term accrued insurance expenses	10,481,000	11,822,000
Long-term pension liabilities	32,789,000	33,080,000
Deferred income taxes	9,093,000	13,332,000
Long-term operating lease liabilities	17,486,000	21,090,000
Other long-term liabilities		49,000
Total liabilities	166,072,000	158,938,000
STOCKHOLDER'S EQUITY
Common stock	21,573,000	21,495,000
Capital in excess of par value	0	0
Retained earnings	619,756,000	627,778,000
Accumulated other comprehensive loss	(17,195,000)	(17,706,000)
Total stockholders' equity	624,134,000	631,567,000
Total liabilities and stockholders' equity	$ 790,206,000	$ 790,505,000