Condensed Consolidated Statements of Cash Flows (Unaudited) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011
CASH FLOWS FROM OPERATING ACTIVITIES:
Net Income	$ 32,841	$ 36,375
Adjustments to Reconcile Net Income to Net Cash Provided by Operating Activities:
Depreciation and Amortization	53,665	49,746
Provision for Doubtful Accounts	1,775	1,373
Non-Cash Stock-Based Compensation	3,154	3,709
Gain on Sale of Used Rental Equipment	(9,381)	(9,713)
Change In:
Accounts Receivable	(10,152)	(14,526)
Income Taxes Receivable		6,131
Prepaid Expenses and Other Assets	(10,729)	(109)
Accounts Payable and Accrued Liabilities	3,580	10,467
Deferred Income	10,575	1,641
Deferred Income Taxes	15,680	19,401
Net Cash Provided by Operating Activities	91,008	104,495
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchase of Rental Equipment	(106,219)	(120,699)
Purchase of Property, Plant and Equipment	(11,025)	(15,181)
Proceeds from Sale of Used Rental Equipment	20,556	21,502
Net Cash Used in Investing Activities	(96,688)	(114,378)
CASH FLOWS FROM FINANCING ACTIVITIES:
Net Borrowings (Repayments) Under Bank Lines of Credit	17,693	(64,067)
Borrowings Under Private Placement		100,000
Principal Payments on Senior Notes		(12,000)
Proceeds from the Exercise of Stock Options	3,572	1,848
Excess Tax Benefit from Exercise and Disqualifying Disposition of Stock Options	844	408
Payment of Dividends	(17,296)	(16,644)
Net Cash Provided by Financing Activities	4,813	9,545
Net Decrease in Cash	(867)	(338)
Cash Balance, beginning of period	1,229	990
Cash Balance, end of period	362	652
Interest Paid, during the period	5,854	3,705
Net Income Taxes Paid (Refunds Received), during the period	4,633	(2,696)
Dividends Accrued During the period, not yet paid	6,156	5,772
Rental Equipment Acquisitions, not yet paid	$ 6,868	$ 5,545