CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Current Assets:
Cash and cash equivalents	$ 14,282	$ 5,989
Receivables, net	93,785	106,380
Prepaid expenses and other current assets	8,152	8,484
Income taxes receivable	1,137	2,017
Total current assets	117,356	122,870
Property and equipment, net	212,001	210,334
Restricted cash and investments	5,796	5,748
Intangible assets, net	238,673	239,571
Goodwill	192,913	191,823
Other assets	1,486	1,641
Total assets	768,225	771,987
Current Liabilities:
Accounts payable	18,768	17,169
Deferred revenue	6,675	8,078
Accrued liabilities	22,798	25,634
Accrued salaries and benefits	9,471	11,513
Income taxes payable	3,360	117
Current portion of closure and post-closure obligations	2,721	2,787
Current portion of long-term debt	2,954	3,056
Total current liabilities	66,747	68,354
Long-term closure and post-closure obligations	69,065	68,367
Long-term debt	280,552	290,684
Other long-term liabilities	8,738	5,825
Deferred income taxes	81,458	82,622
Total liabilities	$ 506,560	$ 515,852
Commitments and contingencies
Stockholders' Equity:
Common stock $0.01 par value, 50,000 authorized; 21,766 and 21,744 shares issued, respectively	$ 218	$ 217
Additional paid-in capital	170,514	169,873
Retained earnings	106,899	103,300
Treasury stock, at cost, 6 and 5 shares, respectively	(259)	(189)
Accumulated other comprehensive loss	(15,707)	(17,066)
Total stockholders' equity	261,665	256,135
Total liabilities and stockholders' equity	$ 768,225	$ 771,987