Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Assets
Cash and cash equivalents	$ 347,558	$ 458,102
Restricted cash	16,398	0
Accounts receivable, net of allowance for doubtful accounts of $10,085 and $1,733, respectively	324,424	468,161
Contract assets	161,061	140,082
Inventories	314,956	309,975
Prepaid expenses and other assets	29,566	27,024
Income taxes receivable	1,119	206
Total current assets	1,195,082	1,403,550
Property, plant and equipment, net	205,819	210,954
Operating lease right-of-use assets	76,859	0
Goodwill	192,116	192,116
Deferred income taxes	5,274	2,478
Other, net	84,724	90,685
Total assets	1,759,874	1,899,783
Current liabilities:
Current installments of long-term debt	8,825	6,793
Accounts payable	302,994	422,053
Income taxes payable	7,895	10,435
Accrued liabilities	139,531	97,878
Total current liabilities	459,245	537,159
Long-term debt, less current installments	138,912	147,277
Operating lease liabilities	67,898	0
Other long-term liabilities	65,483	68,799
Deferred income taxes	13,504	14,323
Shareholders' equity:
Preferred stock, $0.10 par value; 5,000 shares authorized, none issued
Common stock, $0.10 par value; 145,000 shares authorized; issued and outstanding - 36,957 and 41,357, respectively	3,696	4,136
Additional paid-in capital	512,019	554,939
Retained earnings	515,876	584,274
Accumulated other comprehensive loss	(16,759)	(11,124)
Total shareholders' equity	1,014,832	1,132,225
Commitments and contingencies
Total liabilities and shareholders' equity	$ 1,759,874	$ 1,899,783