Condensed Consolidated Statements of Cash Flows (USD $)	6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013
Cash flows from operating activities:
Net income	$ 22,307,000	$ 14,955,000
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	7,750,000	7,432,000
Bad debt expense	305,000	265,000
Loss on early extinguishment of debt	178,000	134,000
Equity-based compensation	332,000	701,000
Non-cash interest expense	186,000	571,000
Other	1,312,000	246,000
Changes in operating assets and liabilities:
Accounts and notes receivable, current portion	(3,542,000)	(2,414,000)
Advances to/from affiliates	(12,000)	249,000
Other current and noncurrent assets	1,854,000	675,000
Other current and noncurrent liabilities	(2,777,000)	496,000
Deferred revenue and deposits	1,549,000	145,000
Net cash provided by operating activities	29,442,000	23,455,000
Cash flows from investing activities:
Purchases of property, equipment and software	(702,000)	(482,000)
Proceeds from sale of property and equipment	1,000	3,000
Capitalization of trademark costs	(58,000)	(91,000)
Net cash used in investing activities	(759,000)	(570,000)
Cash flows from financing activities:
Payments on debt	(15,740,000)	(9,300,000)
Distributions to non-controlling unitholders	(14,437,000)	(20,683,000)
Dividends to Class A common stockholders	(1,449,000)
Payments on capital lease obligations	(103,000)	(158,000)
Deferred offering costs		(2,511,000)
Excess tax benefit realized on delivery of vested restricted stock units	125,000
Tax withholding payment for vested restricted stock units upon delivery	(818,000)
Net cash used in financing activities	(32,422,000)	(32,652,000)
Effect of exchange rate changes on cash	(16,000)	(152,000)
Net decrease in cash and cash equivalents	(3,755,000)	(9,919,000)
Cash and cash equivalents, beginning of year	88,375,000	68,501,000
Cash and cash equivalents, end of period	84,620,000	58,582,000
Supplemental disclosures of cash flow information:
Cash paid for interest	4,507,000	6,374,000
Cash paid for income taxes	4,197,000	1,149,000
Schedule of non-cash investing and financing activities:
Capital leases for property and equipment	$ 18,000	$ 160,000