Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Cash flows from operating activities:
Net income	$ 32,406	$ 30,047	$ 22,943
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	5,539	5,463	4,586
Deferred income taxes	1,099	1,476	(684)
Liability for uncertain tax positions	39	(288)	181
Loss on disposal of property and equipment	(6)	186	26
Non-cash share-based compensation expense	1,224	1,514	1,845
Change in assets and liabilities:
Trade accounts receivable	311	2,767	(2,340)
Prepaid expenses and other current assets	(529)	(833)	(565)
Operating lease assets and liability, net	(8)
Deferred contract costs, net	(719)	(113)
Accounts payable	647	(39)	12
Accrued expenses, wages, bonus and profit sharing	806	(566)	1,759
Income taxes receivable and payable	11	686	(1,023)
Deferred revenue	97	(452)	1,351
Net cash provided by operating activities	40,917	39,848	28,091
Cash flows from investing activities:
Purchases of property and equipment	(4,656)	(5,971)	(4,568)
Purchase of equity investment			(1,300)
Purchase of intangible content license			(250)
Net cash used in investing activities	(4,656)	(5,971)	(6,118)
Cash flows from financing activities:
Payments related to Recapitalization		(72,370)
Proceeds from issuance of note payable		40,000
Borrowings on line of credit	21,000	2,500
Payments on line of credit	(21,000)	(2,500)
Payments on notes payable	(3,715)	(3,071)	(2,473)
Payment of debt issuance costs		(187)
Payments on finance lease obligations	(229)	(157)	(108)
Payment of employee payroll tax withholdings on share-based awards exercised	(1,103)	(1,853)	(1,668)
Payment of dividends on common stock	(31,299)	(16,859)	(16,867)
Net cash used in financing activities	(36,346)	(54,497)	(21,116)
Effect of exchange rate changes on cash	611	(1,122)	855
Net increase (decrease) in cash and cash equivalents	526	(21,742)	1,712
Cash and cash equivalents at beginning of period	12,991	34,733	33,021
Cash and cash equivalents at end of period	13,517	12,991	34,733
Supplemental disclosure of cash paid for:
Interest expense, (none capitalized)	2,014	1,282	76
Income taxes	6,946	2,635	12,827
Supplemental disclosure of non-cash investing and financing activities:
Common stock (formerly class A) issued in the Recapitalization in exchange for then-existing class B shares and options.		121,371
Finance lease obligations originated for property and equipment	192	879	74
Stock tendered to the Company for cashless exercise of stock options in connection with equity incentive plans	$ 3,618	$ 6,098	$ 2,455