Condensed consolidated statements of cash flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Cash flows from operating activities:
Net income	$ 53,912	$ 35,870
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	17,084	15,845
Amortization of deferred financing costs	973	942
Amortization of favorable leases and asset retirement obligations	186	184
Amortization of interest rate caps	446	954
Deferred tax expense	13,300	14,589
Loss on extinguishment of debt	0	79
Third party debt refinancing expense	0	1,021
Gain on re-measurement of tax benefit arrangement	(354)	(541)
Provision for bad debts	(8)	28
Loss on reacquired franchise rights	350	0
Loss (gain) on disposal of property and equipment	547	(323)
Equity-based compensation	2,687	1,012
Changes in operating assets and liabilities, excluding effects of acquisitions:
Accounts receivable	22,281	11,542
Due to and due from related parties	3,375	(289)
Inventory	(501)	355
Other assets and other current assets	(3,109)	(3,239)
National advertising fund	(1,634)	0
Accounts payable and accrued expenses	(16,884)	(14,144)
Other liabilities and other current liabilities	(2,908)	(33)
Income taxes	131	(406)
Payable to related parties pursuant to tax benefit arrangements	(21,706)	(7,909)
Equipment deposits	2,503	5,390
Deferred revenue	6,229	1,826
Deferred rent	1,594	245
Net cash provided by operating activities	78,494	62,998
Cash flows from investing activities:
Additions to property and equipment	(8,136)	(14,127)
Acquisition of franchises	(28,503)	0
Proceeds from sale of property and equipment	134	0
Net cash used in investing activities	(36,505)	(14,127)
Cash flows from financing activities:
Principal payments on capital lease obligations	(23)	0
Repayment of long-term debt	(3,592)	(3,592)
Payment of deferred financing and other debt-related costs	0	(1,278)
Premiums paid for interest rate caps	0	(366)
Exercise of stock options	400	26
Dividend equivalent payments	(138)	(139)
Distributions to Continuing LLC Members	(3,503)	(5,592)
Net cash used in financing activities	(6,856)	(10,941)
Effects of exchange rate changes on cash and cash equivalents	(429)	198
Net increase in cash and cash equivalents	34,704	38,128
Cash and cash equivalents, beginning of period	113,080	40,393
Cash and cash equivalents, end of period	147,784	78,521
Supplemental cash flow information:
Net cash paid for income taxes	2,929	2,914
Cash paid for interest	16,795	15,890
Non-cash investing activities:
Non-cash additions to property and equipment	$ 2,072	$ 988