CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Current Assets:
Cash and cash equivalents	$ 6,383	$ 5,989
Receivables, net	98,290	106,380
Prepaid expenses and other current assets	13,241	8,484
Income taxes receivable	951	2,017
Total current assets	118,865	122,870
Property and equipment, net	219,302	210,334
Restricted cash and investments	5,810	5,748
Intangible assets, net	234,466	239,571
Goodwill	193,655	191,823
Other assets	1,212	1,641
Total assets	773,310	771,987
Current Liabilities:
Accounts payable	15,489	17,169
Deferred revenue	6,184	8,078
Accrued liabilities	22,040	25,634
Accrued salaries and benefits	11,740	11,513
Income taxes payable	179	117
Current portion of closure and post-closure obligations	2,211	2,787
Revolving credit facility	2,303
Current portion of long-term debt	2,903	3,056
Total current liabilities	63,049	68,354
Long-term closure and post-closure obligations	72,055	68,367
Long-term debt	274,869	290,684
Other long-term liabilities	9,764	5,825
Deferred income taxes	79,818	82,622
Total liabilities	499,555	515,852
Commitments and contingencies
Stockholders' Equity:
Common stock $0.01 par value, 50,000 authorized; 21,780 and 21,744 shares issued, respectively	218	217
Additional paid-in capital	171,961	169,873
Retained earnings	118,115	103,300
Treasury stock, at cost, 7 and 5 shares, respectively	(52)	(189)
Accumulated other comprehensive loss	(16,487)	(17,066)
Total stockholders' equity	273,755	256,135
Total liabilities and stockholders' equity	$ 773,310	$ 771,987