Condensed Consolidated Statements of Income (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Revenues
Rental	$ 67,305	$ 65,809	$ 132,807	$ 128,239
Rental related services	17,227	15,146	32,594	28,658
Rental operations	84,532	80,955	165,401	156,897
Sales	10,968	14,170	19,755	25,208
Other	526	620	1,058	1,200
Total revenues	96,026	95,745	186,214	183,305
Direct costs of rental operations:
Depreciation of rental equipment	19,016	17,924	37,698	35,821
Rental related services	12,901	11,366	24,800	21,673
Other	16,226	15,188	31,437	28,738
Total direct costs of rental operations	48,143	44,478	93,935	86,232
Costs of sales	6,965	9,188	12,274	16,356
Total costs of revenues	55,108	53,666	106,209	102,588
Gross profit	40,918	42,079	80,005	80,717
Selling and administrative expenses	24,453	23,840	49,665	47,251
Income from operations	16,465	18,239	30,340	33,466
Other income (expense):
Interest expense	(2,347)	(2,335)	(4,738)	(4,538)
Gain on sale of property, plant and equipment		812		812
Foreign currency exchange gain (loss)	(85)	78	(253)	(10)
Income before provision for income taxes	14,033	16,794	25,349	29,730
Provision for income taxes	5,543	6,589	10,013	11,654
Net income	$ 8,490	$ 10,205	$ 15,336	$ 18,076
Earnings per share:
Basic	$ 0.33	$ 0.39	$ 0.59	$ 0.70
Diluted	$ 0.32	$ 0.39	$ 0.58	$ 0.69
Shares used in per share calculation:
Basic	26,142	25,912	26,117	25,851
Diluted	26,273	26,220	26,272	26,223
Cash dividends declared per share	$ 0.250	$ 0.245	$ 0.500	$ 0.490