Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Assets
Cash and cash equivalents	$ 296,055	$ 277,391
Restricted cash	0	5,822
Accounts receivable, net of allowance for doubtful accounts of $390 and $470, respectively	417,396	449,404
Contract assets	180,814	174,979
Inventories	637,675	683,801
Prepaid expenses and other current assets	46,673	44,350
Total current assets	1,578,613	1,635,747
Property, plant and equipment, net	223,992	227,698
Operating lease right-of-use assets	128,395	130,830
Goodwill	192,116	192,116
Deferred income taxes	27,873	26,943
Other long-term assets	61,821	61,421
Total assets	2,212,810	2,274,755
Current liabilities:
Current installments of long-term debt	5,105	4,283
Accounts payable	348,374	367,480
Advance payments from customers	189,153	204,883
Income taxes payable	24,400	22,225
Accrued liabilities	100,787	114,676
Total current liabilities	667,819	713,547
Long-term debt, net of current installments	310,117	326,674
Operating lease liabilities	119,958	123,385
Other long-term liabilities	29,749	32,064
Shareholders’ equity:
Preferred stock, $0.10 par value; 5,000 shares authorized, none issued	0	0
Common stock, $0.10 par value; 145,000 shares authorized; issued and outstanding - 36,014 and 35,664, respectively	3,601	3,566
Additional paid-in capital	525,596	528,842
Retained earnings	568,590	560,537
Accumulated other comprehensive loss	(12,620)	(13,860)
Total shareholders’ equity	1,085,167	1,079,085
Total liabilities and shareholders' equity	$ 2,212,810	$ 2,274,755