Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Current assets:
Cash and cash equivalents	$ 146,665	$ 99,426
Accounts receivable, net of allowance of $5,578 and $5,572, respectively	230,971	224,550
Inventories, net	137,878	120,503
Prepaid expenses and other current assets	15,205	17,772
Total current assets	530,719	462,251
Property, plant, and equipment, net	108,028	107,603
Operating lease assets	42,592	44,918
Goodwill	511,797	513,383
Acquired intangibles	124,257	125,980
Other assets	2,464	2,316
Total assets	1,319,857	1,256,451
Current liabilities:
Accounts payable	127,533	92,124
Accrued expenses	82,805	88,719
Billings in excess of cost	53,261	44,735
Total current liabilities	263,599	225,578
Deferred income taxes	57,106	57,103
Non-current operating lease liabilities	33,793	35,989
Other non-current liabilities	25,174	22,783
Stockholders’ equity:
Preferred stock, $0.01 par value; authorized 10,000 shares; none outstanding	0	0
Common stock, $0.01 par value; authorized 100,000 shares; 34,266 and 34,219 shares issued and outstanding in 2024 and 2023	343	342
Additional paid-in capital	335,259	332,621
Retained earnings	763,457	738,511
Accumulated other comprehensive loss	(3,078)	(2,114)
Cost of 3,797 and 3,778 common shares held in treasury in 2024 and 2023	(155,796)	(154,362)
Total stockholders’ equity	940,185	914,998
Total liabilities and shareholders' equity	$ 1,319,857	$ 1,256,451