Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Current assets:
Cash and cash equivalents	$ 69,020	$ 57,179
Short-term investments	2,308	1,538
Trade accounts receivable, less allowances of $1,046 and $3,388, respectively	56,503	47,171
Other current assets	11,423	10,942
Total current assets	139,254	116,830
Property and equipment, net	34,154	34,088
Goodwill	403,210	402,259
Intangibles, net	50,141	51,848
Indefinite-lived intangibles	30,887	30,887
Capitalized Software Development Costs for Software Sold to Customers	3,226	3,489
Deferred tax asset, net	23,892	23,732
Other assets	12,636	12,856
Total assets	697,400	675,989
Current liabilities:
Accounts payable and accrued liabilities	14,687	23,043
Accrued payroll and related benefits	5,747	4,932
Current portion of long term debt and capital lease obligations, net of discount of $0 and $3, respectively	608	606
Current deferred rent	246	232
Contingent liability for accrued earn-out acquisition consideration	2,143	1,706
Deferred revenue	20,557	20,519
Other current liabilities	248	228
Total current liabilities	44,236	51,266
Revolving line of credit	226,465	206,465
Long term debt and capital lease obligations, less current portion	33	35
Other liabilities	3,324	3,332
Contingent liability for accrued earn-out acquisition consideration	1,599	2,571
Deferred revenue	3,275	1,968
Long term deferred rent	1,269	1,381
Total liabilities	$ 280,201	$ 267,018
Commitments and Contingencies
Stockholders’ equity:
Preferred stock, $0.10 par value, 500,000 shares authorized, no shares issued and outstanding at March 31, 2016 and December 31, 2015	$ 0	$ 0
Common stock, $0.10 par value, 60,000,000 shares authorized, 32,977,713 issued and outstanding, at March 31, 2016 and 33,416,110 issued and outstanding at December 31, 2015	3,298	3,342
Additional paid-in capital	43,806	57,120
Treasury stock (no shares as of March 31, 2016 and December 31, 2015)	0	0
Retained earnings	398,524	378,787
Accumulated other comprehensive loss	(28,621)	(30,278)
Total stockholders’ equity	417,007	408,971
Stockholders' Equity Attributable to Noncontrolling Interest	192	0
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	417,199	408,971
Total liabilities and stockholders’ equity	$ 697,400	$ 675,989

Sum of the carrying values as of the balance sheet date of obligations incurred through that date and due within one year (or the operating cycle, if longer), including liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received, taxes, interest, rent and utilities, accrued salaries and bonuses, payroll taxes and fringe benefits.

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- 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.