Condensed Consolidated Statements of Income (Unaudited) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
REVENUES
Rental	$ 63,043	$ 60,389	$ 123,644	$ 119,909
Rental Related Services	12,661	11,028	23,506	21,693
Rental Operations	75,704	71,417	147,150	141,602
Sales	10,906	11,830	27,671	19,936
Other	523	518	1,025	1,156
Total Revenues	87,133	83,765	175,846	162,694
Direct Costs of Rental Operations
Depreciation of Rental Equipment	16,626	15,672	33,228	31,073
Rental Related Services	9,391	9,011	18,313	17,564
Other	13,484	10,718	25,841	21,158
Total Direct Costs of Rental Operations	39,501	35,401	77,382	69,795
Costs of Sales	7,486	7,584	19,320	12,284
Total Costs of Revenues	46,987	42,985	96,702	82,079
Gross Profit	40,146	40,780	79,144	80,615
Selling and Administrative Expenses	21,792	21,163	43,430	42,524
Income from Operations	18,354	19,617	35,714	38,091
Interest Expense	2,157	2,382	4,360	4,555
Income Before Provision for Income Taxes	16,197	17,235	31,354	33,536
Provision for Income Taxes	6,349	6,756	12,291	13,146
Net Income	$ 9,848	$ 10,479	$ 19,063	$ 20,390
Earnings Per Share:
Basic	$ 0.39	$ 0.42	$ 0.76	$ 0.83
Diluted	$ 0.38	$ 0.42	$ 0.74	$ 0.81
Shares Used in Per Share Calculation:
Basic	25,354	24,765	25,180	24,702
Diluted	25,818	25,149	25,617	25,139
Cash Dividends Declared Per Share	$ 0.240	$ 0.235	$ 0.480	$ 0.470