Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 26, 2020	Dec. 31, 2019
Current assets:
Cash	$ 25,058	$ 11,000
Accounts receivable, net	265,688	231,311
Operating supplies	10,984	12,127
Other current assets	34,049	26,987
Total current assets	335,779	281,425
Property and equipment	688,116	667,895
Less accumulated depreciation	482,822	468,045
Property and equipment, net	205,294	199,850
Right-of-use assets - operating leases	53,315	40,033
Other assets	21,298	22,335
Intangible assets, net	10,846	10,934
Goodwill	45,152	42,285
Total assets	671,684	596,862
Current liabilities:
Accounts payable	40,905	41,191
Accrued expenses	80,221	52,431
Current portion of long-term debt and finance lease liabilities	35,355	24,650
Other current liabilities	48,517	47,400
Total current liabilities	204,998	165,672
Long-term debt	106,551	143,354
Lease liabilities - finance leases	6,667	1,795
Lease liabilities - operating leases	35,197	25,200
Self-insurance reserve	77,169	62,113
Other noncurrent liabilities	11,343	12,268
Total liabilities	441,925	410,402
Redeemable common shares related to 401KSOP and Employee Stock Ownership Plan (ESOP); 5,174 and 5,147 shares at redemption value as of September 26, 2020 and December 31, 2019	128,834	124,555
Common shareholders' equity:
Common shares, $1.00 par value, per share; 48,000 shares authorized; 37,740 and 37,767 shares issued and outstanding before deducting treasury shares and which excludes 5,174 and 5,147 shares subject to redemption as of September 26, 2020 and December 31, 2019	37,740	37,767
Additional paid-in capital	104,223	96,366
Retained earnings	229,057	179,770
Accumulated other comprehensive loss	(5,928)	(5,403)
Shareholders' equity before treasury stock	365,092	308,500
Less: Cost of common shares held in treasury; 20,065 shares at September 26, 2020 and 19,737 shares at December 31, 2019	264,167	246,595
Total common shareholders' equity	100,925	61,905
Total liabilities and shareholders' equity	$ 671,684	$ 596,862
Common shares, par value	$ 1.00	$ 1.00
Common shares, authorized	48,000,000	48,000,000
Common shares, issued	37,740,000	37,767,000
Common shares, outstanding	37,740,000	37,767,000
Redeemable Shares	5,174,000	5,147,000
Common shares held in treasury	20,065,000	19,737,000