CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Cash flows from operating activities:
Net income (loss)	$ (1,352)	$ 16,882
Adjustments to reconcile net (loss) income to net cash provided by operating activities:
Depreciation and amortization	17,049	18,895
Amortization of intangible assets	14,691	18,539
Change in the fair value of acquisition related contingent consideration	0	16
Unrealized loss on investment in equity securities	5,968	0
Share-based compensation expense	4,111	1,858
Bad debt expense	1,503	2,890
Gain on early extinguishment of debt	0	(3,937)
Amortization of debt discount	298	156
Amortization of debt issuance costs	502	433
Deferred income taxes	(1,349)	0
Loss on disposal of fixed assets	558	2,798
Loss on debt refinancing	4,434	0
Changes in operating assets and liabilities:
Accounts receivable	6,923	11,954
Prepaid expenses and other current assets	(5,267)	(6,811)
Other assets	967	523
Accounts payable and accrued expenses	(17,152)	(10,637)
Other current and non-current liabilities	(8,631)	(41,042)
Net cash provided by operating activities	23,253	12,517
Cash flows from investing activities:
Additions to premises and equipment	(2,756)	(5,658)
Net cash used in investing activities	(2,756)	(5,658)
Cash flows from financing activities:
Proceeds from issuance of long-term debt	407,880	0
Repayments and repurchases of long-term debt	(421,821)	(24,766)
Debt issuance costs	(5,042)	0
Proceeds from stock option exercises	2,707	765
Purchase of treasury shares	(21,121)	(15,531)
Distributions to non-controlling interests	(1,181)	(1,056)
Payment of tax withholding on issuance of restricted shares and stock option exercises	(410)	(1,089)
Net cash used in financing activities	(38,988)	(41,677)
Net decrease in cash, cash equivalents and restricted cash	(18,491)	(34,818)
Cash, cash equivalents and restricted cash at the beginning of the period	108,843	153,421
Cash, cash equivalents and restricted cash at the end of the period	90,352	118,603
Supplemental cash flow information:
Interest paid	11,540	10,787
Income taxes paid, net	2,865	12,668
Non-cash investing and financing activities:
Increase (decrease) in payables for purchases of premises and equipment	398	(378)
Increase in payables for purchases of treasury shares	$ 0	$ 3,042