Condensed Consolidated Statements of Income (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
REVENUES
Rental	$ 69,642	$ 65,941	$ 197,881	$ 189,585
Rental Related Services	17,871	15,858	46,529	39,364
Rental Operations	87,513	81,799	244,410	228,949
Sales	24,998	26,515	50,206	54,186
Other	514	525	1,714	1,602
Total Revenues	113,025	108,839	296,330	284,737
Direct Costs of Rental Operations:
Depreciation of Rental Equipment	18,298	17,233	54,119	50,461
Rental Related Services	13,506	11,278	35,179	29,591
Other	14,955	16,361	43,693	42,202
Total Direct Costs of Rental Operations	46,759	44,872	132,991	122,254
Costs of Sales	16,968	18,778	33,324	38,098
Total Costs of Revenues	63,727	63,650	166,315	160,352
Gross Profit	49,298	45,189	130,015	124,385
Selling and Administrative Expenses	24,200	22,383	71,451	65,813
Income from Operations	25,098	22,806	58,564	58,572
Other Income (Expense):
Interest Expense	(2,386)	(2,148)	(6,924)	(6,508)
Gain on Sale of Property, Plant and Equipment			812
Foreign Currency Exchange Gain (Loss)	(103)	21	(113)	(31)
Income Before Provision for Income Taxes	22,609	20,679	52,339	52,033
Provision for Income Taxes	8,863	8,106	20,517	20,397
Net Income	$ 13,746	$ 12,573	$ 31,822	$ 31,636
Earnings Per Share:
Basic	$ 0.53	$ 0.49	$ 1.23	$ 1.25
Diluted	$ 0.53	$ 0.48	$ 1.22	$ 1.23
Shares Used in Per Share Calculation:
Basic	25,953	25,649	25,885	25,338
Diluted	26,152	26,095	26,177	25,787
Cash Dividends Declared Per Share	$ 0.245	$ 0.240	$ 0.735	$ 0.720