Condensed Consolidated Statements of Cash Flows (USD $)	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013
Cash flows from operating activities:
Net income	$ 36,362,000	$ 22,652,000
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	11,517,000	11,088,000
Bad debt expense	289,000	289,000
Loss on early extinguishment of debt	178,000	1,798,000
Equity-based compensation	532,000	701,000
Non-cash interest expense	273,000	723,000
Other	1,321,000	232,000
Changes in operating assets and liabilities:
Accounts and notes receivable, current portion	(1,991,000)	(1,678,000)
Advances from/to affiliates	34,000	(126,000)
Other current and noncurrent assets	1,394,000	(30,000)
Other current and noncurrent liabilities	(2,136,000)	1,927,000
Deferred revenue and deposits	1,225,000	(686,000)
Net cash provided by operating activities	48,998,000	36,890,000
Cash flows from investing activities:
Purchases of property, equipment and software	(1,017,000)	(676,000)
Proceeds from sale of property and equipment	2,000	8,000
Capitalization of trademark costs	(91,000)	(174,000)
Net cash used in investing activities	(1,106,000)	(842,000)
Cash flows from financing activities:
Proceeds from issuance of debt		230,000,000
Payments on debt	(16,278,000)	(234,083,000)
Debt issuance costs		(1,301,000)
Distributions to non-controlling unitholders	(18,881,000)	(20,684,000)
Dividends to Class A common stockholders	(2,173,000)
Payments on capital lease obligations	(156,000)	(211,000)
Deferred offering costs	0	(4,816,000)
Excess tax benefit realized on delivery of vested restricted stock units and exercise of stock options	179,000
Tax withholding payment for vested restricted stock units upon delivery	(818,000)
Proceeds from exercise of stock options	54,000
Net cash used in financing activities	(38,073,000)	(31,095,000)
Effect of exchange rate changes on cash	(66,000)	28,000
Net increase in cash and cash equivalents	9,753,000	4,981,000
Cash and cash equivalents, beginning of year	88,375,000	68,501,000
Cash and cash equivalents, end of period	98,128,000	73,482,000
Supplemental disclosures of cash flow information:
Cash paid for interest	6,692,000	11,443,000
Cash paid for income taxes	6,824,000	1,632,000
Schedule of non-cash investing and financing activities:
Capital leases for property and equipment	18,000	236,000
Distributions payable to non-controlling unitholders		6,650,000
Increase in accounts payable for capitalization of trademark costs	$ 155,000	$ 15,000