Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Assets
Cash and cash equivalents	$ 329,558	$ 347,558
Restricted cash	5,252	16,398
Accounts receivable, net of allowance for doubtful accounts of $12,192 and $10,085, respectively	306,242	324,424
Contract assets	161,396	161,061
Inventories	352,851	314,956
Prepaid expenses and other current assets	29,280	29,566
Income taxes receivable	648	1,119
Total current assets	1,185,227	1,195,082
Property, plant and equipment, net of accumulated depreciationof $481,924 and $460,708, respectively	190,610	205,819
Operating lease right-of-use assets	82,849	76,859
Goodwill	192,116	192,116
Deferred income taxes	5,200	5,274
Other assets, net	78,505	84,724
Total assets	1,734,507	1,759,874
Current liabilities:
Current installments of long-term debt	8,956	8,825
Accounts payable	282,591	302,994
Customer deposits	58,585	37,511
Income taxes payable	4,418	7,895
Accrued liabilities	94,935	102,020
Total current liabilities	449,485	459,245
Long-term debt, less current installments	147,522	138,912
Operating lease liabilities	74,407	67,898
Other long-term liabilities	64,725	65,483
Deferred income taxes	8,041	13,504
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 - and outstanding - 36,474 and 36,957, respectively	3,648	3,696
Additional paid-in capital	511,869	512,019
Retained earnings	493,524	515,876
Accumulated other comprehensive loss	(18,714)	(16,759)
Total shareholders' equity	990,327	1,014,832
Commitments and contingencies
Total liabilities and shareholders' equity	$ 1,734,507	$ 1,759,874