Condensed Consolidated Statements of Income (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
REVENUES
Rental	$ 65,809	$ 63,043	$ 128,239	$ 123,644
Rental Related Services	15,146	12,661	28,658	23,506
Rental Operations	80,955	75,704	156,897	147,150
Sales	14,170	10,906	25,208	27,671
Other	620	546	1,200	1,077
Total Revenues	95,745	87,156	183,305	175,898
Direct Costs of Rental Operations:
Depreciation of Rental Equipment	17,924	16,626	35,821	33,228
Rental Related Services	11,366	9,391	21,673	18,313
Other	15,188	13,484	28,738	25,841
Total Direct Costs of Rental Operations	44,478	39,501	86,232	77,382
Costs of Sales	9,188	7,486	16,356	19,320
Total Costs of Revenues	53,666	46,987	102,588	96,702
Gross Profit	42,079	40,169	80,717	79,196
Selling and Administrative Expenses	23,840	21,792	47,251	43,430
Income from Operations	18,239	18,377	33,466	35,766
Other Income (Expense):
Interest Expense	(2,335)	(2,157)	(4,538)	(4,360)
Gain on Sale of Property, Plant and Equipment	812		812
Foreign Currency Exchange Gain (Loss)	78	(23)	(10)	(52)
Income Before Provision for Income Taxes	16,794	16,197	29,730	31,354
Provision for Income Taxes	6,589	6,349	11,654	12,291
Net Income	$ 10,205	$ 9,848	$ 18,076	$ 19,063
Earnings Per Share:
Basic	$ 0.39	$ 0.39	$ 0.70	$ 0.76
Diluted	$ 0.39	$ 0.38	$ 0.69	$ 0.74
Shares Used in Per Share Calculation:
Basic	25,912	25,354	25,851	25,180
Diluted	26,220	25,818	26,223	25,617
Cash Dividends Declared Per Share	$ 0.245	$ 0.240	$ 0.490	$ 0.480