Condensed Consolidated Statements of Income (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Revenues
Rental	$ 86,087	$ 89,506
Rental related services	19,669	24,511
Rental operations	105,756	114,017
Revenues	15,439	15,436
Total revenues	121,195	129,453
Direct costs of rental operations:
Depreciation of rental equipment	21,255	21,638
Rental related services	14,604	18,263
Other	19,707	19,453
Total direct costs of rental operations	55,566	59,354
Costs of sales	8,548	8,443
Total costs of revenues	64,114	67,797
Gross profit	57,081	61,656
Selling and administrative expenses	33,137	31,954
Income from operations	23,944	29,702
Other expense:
Interest expense	(1,783)	(2,652)
Foreign currency exchange loss	(55)	(436)
Income before provision for income taxes	22,106	26,614
Provision for income taxes	4,708	6,455
Net income	$ 17,398	$ 20,159
Earnings per share:
Basic	$ 0.72	$ 0.83
Diluted	$ 0.71	$ 0.81
Shares used in per share calculation:
Basic	24,153	24,292
Diluted	24,512	24,738
Cash dividends declared per share	$ 0.435	$ 0.420
Sales [Member]
Revenues
Revenues	$ 14,611	$ 14,366
Other [Member]
Revenues
Revenues	$ 828	$ 1,070