Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Cash flows from operating activities:
Net income (loss)	$ (1,808)	$ 2,618
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization	3,939	3,546
Deferred income taxes	(1,014)	1,473
Amortization of debt issue costs	124	183
Amortization of syndication contracts	176	109
Payments on syndication contracts	(186)	(113)
Equity in net (income) loss of nonconsolidated affiliate	62
Non-cash stock-based compensation	1,249	975
Changes in assets and liabilities:
(Increase) decrease in accounts receivable	11,043	10,979
(Increase) decrease in prepaid expenses and other assets	(3,981)	(891)
Increase (decrease) in accounts payable, accrued expenses and other liabilities	(5,977)	(5,963)
Net cash provided by operating activities	3,627	12,916
Cash flows from investing activities:
Purchases of property and equipment	(3,030)	(1,526)
Purchases of intangible assets	(3,153)
Purchases of marketable securities	(159,403)
Purchases of investments		(250)
Deposits on acquisition		(230)
Net cash used in investing activities	(165,586)	(2,006)
Cash flows from financing activities:
Proceeds from stock option exercises		311
Tax payments related to shares withheld for share-based compensation plans	(2,227)
Payments on long-term debt	(750)	(938)
Dividends paid	(4,518)	(2,821)
Repurchase of Class A common stock	(2,402)
Net cash used in financing activities	(9,897)	(3,448)
Effect of exchange rates on cash, cash equivalents and restricted cash	(5)
Net increase (decrease) in cash, cash equivalents and restricted cash	(171,861)	7,462
Cash, cash equivalents and restricted cash:
Beginning	261,854	61,520
Ending	89,993	68,982
Cash payments for:
Interest	3,274	3,462
Income taxes	84	426
Supplemental disclosures of non-cash investing and financing activities:
Capital expenditures financed through accounts payable, accrued expenses and other liabilities	870	$ 786
Contingent consideration included in accounts payable, accrued expenses and other liabilities	$ 18,000