Condensed Consolidated Statements of Income (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Revenues:
Revenues	$ 244,686	$ 276,853	$ 733,791	$ 766,623
Cost of revenues:
Cost of revenues	156,561	184,016	482,814	511,042
Gross profit	88,125	92,837	250,977	255,581
Selling, general and administrative expenses	55,962	54,704	172,385	162,584
Gain on sales of property and equipment, net	927	339	2,301	1,769
Income from operations	33,090	38,472	80,893	94,766
Other income (expense):
Interest expense	(13,469)	(13,481)	(40,229)	(40,675)
Other, net	386	501	1,505	1,083
Total other expense, net	(13,083)	(12,980)	(38,724)	(39,592)
Income before provision for income taxes	20,007	25,492	42,169	55,174
Provision for income taxes	8,342	10,720	17,427	22,836
Net income	$ 11,665	$ 14,772	$ 24,742	$ 32,338
Net income per common share:
Basic	$ 0.33	$ 0.42	$ 0.70	$ 0.92
Diluted	$ 0.33	$ 0.42	$ 0.70	$ 0.92
Weighted average common shares outstanding:
Basic	35,424	35,308	35,373	35,258
Diluted	35,504	35,350	35,461	35,317
Dividends declared per common share outstanding	$ 0.275	$ 0.275	$ 0.825	$ 0.775
Rental Depreciation [Member]
Cost of revenues:
Cost of revenues	$ 41,528	$ 40,963	$ 120,700	$ 121,121
Rental Expense [Member]
Cost of revenues:
Cost of revenues	18,378	19,210	53,162	52,522
Other [Member]
Revenues:
Revenues	17,346	17,440	48,679	48,121
Cost of revenues:
Cost of revenues	16,991	16,901	48,129	47,329
Gross profit	355	539	550	792
Equipment Rentals [Member]
Revenues:
Revenues	118,535	118,055	330,023	328,072
Cost of revenues:
Gross profit	58,629	57,882	156,161	154,429
New Equipment Sales [Member]
Revenues:
Revenues	44,764	66,552	151,836	175,465
Cost of revenues:
Cost of revenues	40,147	60,000	135,152	156,068
Gross profit	4,617	6,552	16,684	19,397
Used Equipment Sales [Member]
Revenues:
Revenues	20,630	29,111	71,973	83,113
Cost of revenues:
Cost of revenues	14,364	20,262	49,751	56,761
Gross profit	6,266	8,849	22,222	26,352
Parts Sales [Member]
Revenues:
Revenues	27,335	28,968	81,958	84,400
Cost of revenues:
Cost of revenues	19,708	21,098	59,184	61,224
Gross profit	7,627	7,870	22,774	23,176
Services Revenues [Member]
Revenues:
Revenues	16,076	16,727	49,322	47,452
Cost of revenues:
Cost of revenues	5,445	5,582	16,736	16,017
Gross profit	$ 10,631	$ 11,145	$ 32,586	$ 31,435