Condensed Consolidated Statements of Income (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Revenues
Rental	$ 89,506	$ 82,696
Rental related services	24,511	21,455
Rental operations	114,017	104,151
Revenues	15,436	17,857
Total revenues	129,453	122,008
Direct costs of rental operations:
Depreciation of rental equipment	21,638	18,961
Rental related services	18,263	16,363
Other	19,453	19,733
Total direct costs of rental operations	59,354	55,057
Costs of sales	8,443	9,946
Total costs of revenues	67,797	65,003
Gross profit	61,656	57,005
Selling and administrative expenses	31,954	29,695
Income from operations	29,702	27,310
Other income (expense):
Interest expense	(2,652)	(3,108)
Foreign currency exchange (loss) gain	(436)	49
Income before provision for income taxes	26,614	24,251
Provision for income taxes	6,455	5,802
Net income	$ 20,159	$ 18,449
Earnings per share:
Basic	$ 0.83	$ 0.76
Diluted	$ 0.81	$ 0.75
Shares used in per share calculation:
Basic	24,292	24,195
Diluted	24,738	24,540
Cash dividends declared per share	$ 0.420	$ 0.375
Sales [Member]
Revenues
Revenues	$ 14,366	$ 16,825
Other [Member]
Revenues
Revenues	$ 1,070	$ 1,032