CONSOLIDATED BALANCE SHEETS (UNAUDITED) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Current assets:
Cash	$ 180,556	$ 191,700
Trade accounts receivable, net	113,554	80,904
Prepaid expenses & other current assets	14,935	13,730
Total current assets	309,045	286,334
Property and equipment, net	10,715	10,256
Right of use lease assets, net	12,648	0
Intangible assets, net	16,368	13,604
Other assets	350	332
Total assets	349,126	310,526
Current liabilities:
Accounts payable	80,100	60,092
Accrued expenses	20,967	24,150
Lease liabilities	4,171	0
Other current liabilities	5,312	4,883
Total current liabilities	110,550	89,125
Deferred income taxes, net	1,857	781
Lease liabilities	8,866	0
Other long-term liabilities	8,958	8,931
Total liabilities	130,231	98,837
Commitments and contingencies (Notes 2, 3 and 6)	0	0
Stockholders' equity:
Common stock, $0.0001 par, 200,000 shares authorized, 66,911 and 66,569 shares issued and outstanding	7	7
Additional paid-in capital	118,774	117,763
Retained earnings	100,114	93,919
Total stockholders' equity	218,895	211,689
Total liabilities and stockholders' equity	$ 349,126	$ 310,526