Condensed Consolidated Statements of Income (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Revenues
Rental	$ 70,195	$ 69,642	$ 203,002	$ 197,881
Rental related services	21,862	17,871	54,456	46,529
Rental operations	92,057	87,513	257,458	244,410
Sales	20,426	24,998	40,181	50,206
Other	565	514	1,623	1,714
Total revenues	113,048	113,025	299,262	296,330
Direct costs of rental operations:
Depreciation of rental equipment	18,809	18,298	56,507	54,119
Rental related services	15,802	13,506	40,602	35,179
Other	14,032	14,955	45,469	43,693
Total direct costs of rental operations	48,643	46,759	142,578	132,991
Costs of sales	14,259	16,968	26,533	33,324
Total costs of revenues	62,902	63,727	169,111	166,315
Gross profit	50,146	49,298	130,151	130,015
Selling and administrative expenses	24,996	24,200	74,661	71,451
Income from operations	25,150	25,098	55,490	58,564
Other income (expense):
Interest expense	(2,444)	(2,386)	(7,182)	(6,924)
Gain on sale of property, plant and equipment				812
Foreign currency exchange loss	(201)	(103)	(454)	(113)
Income before provision for income taxes	22,505	22,609	47,854	52,339
Provision for income taxes	8,889	8,863	18,902	20,517
Net income	$ 13,616	$ 13,746	$ 28,952	$ 31,822
Earnings per share:
Basic	$ 0.54	$ 0.53	$ 1.12	$ 1.23
Diluted	$ 0.54	$ 0.53	$ 1.12	$ 1.22
Shares used in per share calculation:
Basic	25,334	25,953	25,853	25,885
Diluted	25,408	26,152	25,954	26,177
Cash dividends declared per share	$ 0.250	$ 0.245	$ 0.750	$ 0.735