Condensed Consolidated Balance Sheets (Current Period Unaudited) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Current assets:
Cash and cash equivalents	$ 35,750	$ 33,021
Trade accounts receivable, less allowance for doubtful accounts of $188 and $169 in 2017 and 2016, respectively	13,588	10,864
Unbilled revenue	1,283	1,546
Prepaid expenses	3,075	1,585
Income tax receivable	61	14
Other current assets	65	35
Total current assets	53,822	47,065
Property and equipment, net	12,089	11,806
Intangible assets, net	2,932	3,124
Goodwill	58,036	57,861
Other	1,861	768
Total assets	128,740	120,624
Current liabilities:
Current portion of notes payable	1,693	2,683
Accounts payable	548	765
Accrued wages, bonus and profit sharing	4,151	4,543
Accrued expenses	3,122	3,069
Current portion of capital lease obligations	87	82
Income taxes payable	1,862	662
Dividends payable	4,218	4,213
Deferred revenue	18,486	15,497
Total current liabilities	34,167	31,514
Notes payable, net of current portion		857
Deferred income taxes	4,855	4,670
Other long term liabilities	874	777
Total liabilities	39,896	37,818
Shareholders’ equity:
Preferred stock, $0.01 par value; authorized 2,000,000 shares, none issued	0	0
Additional paid-in capital	50,121	46,725
Retained earnings	75,278	71,507
Accumulated other comprehensive loss	(1,528)	(2,626)
Treasury stock, at cost; 4,856,445 Class A shares, 777,412 Class B shares in 2017 and 4,765,691 Class A shares, 768,944 Class B shares in 2016	(35,057)	(32,830)
Total shareholders’ equity	88,844	82,806
Total liabilities and shareholders’ equity	128,740	120,624
Common Class A [Member]
Shareholders’ equity:
Common stock, value	26	26
Common Class B [Member]
Shareholders’ equity:
Common stock, value	$ 4	$ 4

Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount due from customers or clients, within one year of the balance sheet date (or the normal operating cycle, whichever is longer), for goods or services (including trade receivables) that have been delivered or sold in the normal course of business, reduced to the estimated net realizable fair value by an allowance established by the entity of the amount it deems uncertain of collection.