Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Current assets:
Cash and cash equivalents	$ 18,621	$ 17,608
Accounts receivable, net of allowance of $4,849 and $3,746, respectively	266,487	217,156
Inventories, net	159,542	170,360
Prepaid expenses and other current assets	18,320	18,813
Total current assets	462,970	423,937
Property, plant, and equipment, net	106,130	109,584
Operating lease assets	25,041	26,502
Goodwill	511,961	512,363
Acquired intangibles	131,925	137,526
Other assets	550	701
Total assets	1,238,577	1,210,613
Current liabilities:
Accounts payable	155,464	106,582
Accrued expenses	82,746	73,721
Billings in excess of cost	54,838	35,017
Total current liabilities	293,048	215,320
Long-term debt	9,790	88,762
Deferred income taxes	47,024	47,088
Non-current operating lease liabilities	18,502	19,041
Other non-current liabilities	19,903	18,303
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; 34,194 and 34,060 shares issued and outstanding in 2023 and 2022	342	340
Additional paid-in capital	327,927	322,873
Retained earnings	679,800	627,978
Accumulated other comprehensive loss	(4,115)	(3,432)
Cost of 3,770 and 3,199 common shares held in treasury in 2023 and 2022	(153,644)	(125,660)
Total stockholders’ equity	850,310	822,099
Total liabilities and shareholders' equity	$ 1,238,577	$ 1,210,613