CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Current Assets:
Cash and cash equivalents	$ 10,197	$ 22,971
Receivables, net	120,270	135,261
Prepaid expenses and other current assets	10,549	11,984
Income taxes receivable	4,683	6,912
Deferred income taxes	1,476	2,377
Total current assets	147,175	179,505
Property and equipment, net	221,918	227,684
Restricted cash and investments	5,756	5,729
Intangible assets, net	272,696	278,667
Goodwill	219,660	221,279
Other assets	10,623	11,308
Deferred income taxes		85
Total assets	877,828	924,257
Current Liabilities:
Accounts payable	18,112	24,513
Deferred revenue	8,288	13,190
Accrued liabilities	32,194	36,251
Accrued salaries and benefits	9,900	13,322
Income taxes payable	3,062	4,124
Current portion of closure and post-closure obligations	5,703	5,359
Current portion of long-term debt	3,616	3,828
Total current liabilities	80,875	100,587
Long-term closure and post-closure obligations	67,461	67,511
Long-term debt	369,079	390,825
Other long-term liabilities	6,479	4,336
Deferred income taxes	105,865	109,661
Total liabilities	629,759	672,920
Commitments and contingencies
Stockholders' Equity:
Common stock $0.01 par value, 50,000 authorized; 21,659 and 21,632 shares issued, respectively	217	216
Additional paid-in capital	165,845	165,524
Retained earnings	95,272	93,301
Treasury stock, at cost, 0 and 1 shares, respectively	(5)	(18)
Accumulated other comprehensive income (loss)	(13,260)	(7,686)
Total stockholders' equity	248,069	251,337
Total liabilities and stockholders' equity	$ 877,828	$ 924,257