Consolidated Statements of Income - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Revenues
Rental	$ 456,029	$ 390,013	$ 351,790
Rental related services	122,617	98,061	92,393
Rental operations	578,646	488,074	444,183
Revenues	155,177	128,759	128,371
Total revenues	733,823	616,833	572,554
Direct costs of rental operations:
Depreciation of rental equipment	96,429	91,887	85,866
Rental related services	89,793	74,256	68,105
Other	116,780	91,069	73,818
Total direct costs of rental operations	303,002	257,212	227,789
Costs of sales	93,913	78,600	81,019
Total costs of revenues	396,915	335,812	308,808
Gross profit	336,908	281,021	263,746
Selling and administrative expenses	171,342	148,600	122,993
Income from operations	165,566	132,421	140,753
Other (expense) income:
Interest expense	(15,168)	(10,455)	(8,787)
Foreign currency exchange (loss) gain	(378)	(210)	78
Income before provision for income taxes	150,020	121,756	132,044
Provision for income taxes	34,882	32,051	30,060
Net income	$ 115,138	$ 89,705	$ 101,984
Earnings per share:
Basic	$ 4.73	$ 3.70	$ 4.22
Diluted	$ 4.70	$ 3.66	$ 4.16
Earnings Per Share Reconciliation [Abstract]
Basic	24,353	24,220	24,157
Diluted	24,519	24,515	24,531
Cash dividends declared per share	$ 1.82	$ 1.74	$ 1.68
Sales [Member]
Revenues
Revenues	$ 150,653	$ 125,235	$ 124,604
Other [Member]
Revenues
Revenues	$ 4,524	$ 3,524	$ 3,767