CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015
Cash flows from operating activities:
Net income (loss)	$ (18,210)	$ 9,289
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Provision for uncollectible receivables from third parties	(17)	(200)
Provision for uncollectible receivables from related parties	(229)	0
Depreciation and amortization	14,823	13,384
Amortization of debt issuance costs	440	437
Unrealized loss related to interest rate swaps	2,194	1,029
Asset impairment expense	22,845	0
Loss (gain) on sale of assets	(19)	264
Equity-based incentive compensation	815	732
Equity earnings in unconsolidated affiliate	781	1,939
Distributions from unconsolidated affiliate	0	2,321
Gain related to investments	0	(267)
Changes in assets and liabilities
Increase in accounts receivable	(1,950)	(5,336)
Decrease (increase) in receivables from related parties	510	(352)
Decrease in prepaid insurance	1,181	1,295
Increase in other current assets	(123)	(290)
Decrease (increase) in other assets	37	(1,720)
Increase in accounts payable	1,043	1,586
Increase (decrease) in accrued interest payable	8	(44)
Increase in accrued property taxes	577	440
Increase (decrease) in unearned revenue	(823)	1,465
Decrease in unearned revenue from related parties	(716)	(162)
Decrease in accrued payroll	(2,703)	(1,699)
Increase (decrease) in other accrued liabilities	39	(481)
Net cash provided by operating activities	18,979	19,224
Cash flows from investing activities:
Acquisitions	(18,989)	(13,895)
Capital expenditures	(11,577)	(14,516)
Proceeds from sale of assets	1,233	864
Distributions from unconsolidated affiliate	0	538
Proceeds from sale of investments	0	2,346
Net cash used in investing activities	(29,333)	(24,663)
Cash flows from financing activities:
Payment on insurance premium financing agreement	(2,612)	(1,445)
Debt issuance costs	(17)	0
Borrowings under credit facility	65,000	65,000
Payments under credit facility	(31,000)	(38,000)
Proceeds from equity issuance, net of offering costs	154	0
Capital contribution related to profits interest	75	74
Distributions	(21,250)	(20,497)
Net cash provided by financing activities	10,350	5,132
Net decrease in cash and cash equivalents	(4)	(307)
Cash and cash equivalents at beginning of period	3,038	2,661
Cash and cash equivalents at end of period	3,034	2,354
Supplemental disclosure of cash flow information:
Increase (decrease) in accounts payable related to purchase of property, plant and equipment	(1,432)	2,925
Increase in accrued liabilities related to insurance premium financing agreement	$ 2,469	$ 3,439