Consolidated Statements of Income - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Revenues
Rental	$ 273,696	$ 269,575	$ 255,766
Rental related services	73,314	64,132	53,148
Rental operations	347,010	333,707	308,914
Sales	55,385	72,248	68,443
Other	2,149	2,167	2,152
Total revenues	404,544	408,122	379,509
Direct costs of rental operations
Depreciation of rental equipment	75,213	72,678	68,208
Rental related services	54,719	48,849	40,189
Other	60,936	56,946	55,017
Total direct costs of rental operations	190,868	178,473	163,414
Cost of sales	36,769	47,430	47,080
Total costs of revenues	227,637	225,903	210,494
Gross profit	176,907	182,219	169,015
Selling and administrative expenses	99,950	96,859	88,765
Income from operations	76,957	85,360	80,250
Other income (expense):
Interest expense	(10,092)	(9,280)	(8,687)
Gain on sale of property, plant and equipment		812
Foreign currency exchange loss	(488)	(331)	(189)
Income before provision for income taxes	66,377	76,561	71,374
Provision for income taxes	25,907	30,852	27,977
Net income	$ 40,470	$ 45,709	$ 43,397
Earnings per share:
Basic	$ 1.60	$ 1.77	$ 1.71
Diluted	$ 1.59	$ 1.75	$ 1.67
Shares used in per share calculations:
Basic	25,369	25,914	25,433
Diluted	25,457	26,175	25,926
Cash dividends declared per share	$ 1.00	$ 0.98	$ 0.96