CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Current assets:
Cash	$ 160,777	$ 127,009
Trade accounts receivable, net	103,938	82,722
Prepaid expenses & other current assets	12,843	15,033
Total current assets	277,558	224,764
Property and equipment, net	10,306	9,726
Intangible assets, net	5,214	3,588
Deferred income taxes, net	667	2,307
Other assets	1,986	477
Total assets	295,731	240,862
Current liabilities:
Accounts payable	88,920	73,252
Accrued expenses	26,501	23,395
Other current liabilities	3,673	3,150
Total current liabilities	119,094	99,797
Other long-term liabilities	8,395	7,162
Total liabilities	127,489	106,959
Commitments and contingencies (Notes 2, 3, 6, 7 and 9)	0	0
Stockholders' equity:
Common stock, $0.0001 par, 200,000 shares authorized, 66,271 and 65,982 shares issued and outstanding	7	7
Additional paid-in capital	111,275	106,669
Retained earnings	56,960	27,227
Total stockholders' equity	168,242	133,903
Total liabilities and stockholders' equity	$ 295,731	$ 240,862

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).

Name:	us-gaap_AccountsPayableCurrent
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.