CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income (loss)	$ 114,183	$ (14,322)	$ 18,897
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization	56,921	28,643	17,031
Amortization of debt issuance costs and (premium) discount	(4,372)	(2,261)	854
Equity in income of unconsolidated affiliates	(3,460)	(2,705)	(3,355)
Gain on termination of supplemental executive retirement plan assets of unconsolidated affiliate		(715)
Gain on extinguishment of debt of unconsolidated affiliate			(11,980)
Gain (Loss )on early retirement of debt	1,937	90
Gain on valuation of unconsolidated affiliate	(35,582)
Distributions from unconsolidated affiliate		509	1,626
Change in fair value of acquisition related contingencies	52	16
Stock-based compensation expense	1,488
Loss on sale or disposal of property	6	84	226
(Benefit) provision for bad debts	(18)	1,070	847
(Benefit) provision for deferred income taxes	(70,773)	1,583
Change in operating assets and liabilities:
Restricted cash	(711)	2,273	83
Accounts receivable	2,955	358	(454)
Inventories	(71)	(12)	(264)
Prepaid expenses and other	2,094	2,503	(37)
Accounts payable	178	1,811	400
Interest payable	(14,112)	18,063
Income taxes payable	(137)	137
Accrued and other liabilities and due to unconsolidated affiliates	4,715	(973)	(172)
Net cash provided by operating activities	56,715	31,606	23,536
INVESTING ACTIVITIES:
Capital expenditures, net of payables	(36,762)	(10,564)	(7,413)
Investment in unconsolidated affiliate	(1,010)
Net cash (used) acquired in business combinations	(125,016)	48,110
Proceeds from sale of property and equipment	153	3	19
Decrease in restricted cash due to credit support deposit	2,500	2,500
Reimbursement of capital expenditures from West Virginia regulatory authorities	1,266	799
(Increase) decrease in other assets, net	115	(435)	(166)
Net cash (used in) provided by investing activities	(158,754)	40,413	(7,560)
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from issuance of Senior Notes	375,000
Payments from issuance of New Term Loan	425,000
Net borrowings on New Revolving Credit Facility	131,000
Principal payments under New Revolving Credit Facility	(37,500)
Retirement of long‑term debt	(728,664)	(13,525)	(5,000)
Principal payments on capital leases	(88)	(225)	(369)
Debt issuance costs	(25,820)
Call premium on early retirement of debt	(44,090)
Cash distributions to members		(575)	(6,097)
Proceeds from exercise of stock options	(2,125)	245
Repurchase of treasury stock		(148)
Net cash provided by (used in) financing activities	92,713	(14,228)	(11,466)
(DECREASE) INCREASE IN CASH AND CASH EQUIVALENTS	(9,326)	57,791	4,510
CASH AND CASH EQUIVALENTS, BEGINNING OF YEAR	87,604	29,813	25,303
CASH AND CASH EQUIVALENTS, END OF YEAR	78,278	87,604	29,813
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION:
Interest paid	78,378	14,848	14,827
Cash paid during period for income taxes	1,198	360
Noncash distribution of Tamarack investment		5,479
Payables for purchase of property and equipment	500	$ 3,890	397
Capital lease obligations settled through deposits			68
Equipment acquired under capital leases	$ 870		$ 95