CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Current Assets:
Cash and cash equivalents	$ 10,309	$ 7,015
Receivables, net	93,387	96,819
Prepaid expenses and other current assets	7,892	7,458
Income taxes receivable	2,039	4,076
Total current assets	113,627	115,368
Property and equipment, net	225,760	226,237
Restricted cash and investments	5,794	5,787
Intangible assets, net	231,905	234,356
Goodwill	193,765	193,621
Other assets	875	1,031
Total assets	771,726	776,400
Current Liabilities:
Accounts payable	12,529	13,948
Deferred revenue	9,867	7,820
Accrued liabilities	19,903	22,605
Accrued salaries and benefits	10,605	10,720
Income taxes payable	105	165
Current portion of closure and post-closure obligations	2,257	2,256
Revolving credit facility		2,177
Current portion of long-term debt	2,862	2,903
Total current liabilities	58,128	62,594
Long-term closure and post-closure obligations	73,642	72,826
Long-term debt	270,171	274,459
Other long-term liabilities	4,399	5,164
Deferred income taxes	81,870	81,333
Total liabilities	488,210	496,376
Commitments and contingencies
Stockholders' Equity:
Common stock $0.01 par value, 50,000 authorized; 21,823 and 21,780 shares issued, respectively	218	218
Additional paid-in capital	174,044	172,704
Retained earnings	123,141	121,879
Treasury stock, at cost, 9 and 7 shares, respectively	(135)	(52)
Accumulated other comprehensive loss	(13,752)	(14,725)
Total stockholders' equity	283,516	280,024
Total liabilities and stockholders' equity	$ 771,726	$ 776,400