Consolidated balance sheets - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
CURRENT ASSETS:
Cash and cash equivalents	$ 39,771	$ 35,345
Accounts receivable, net	88,358	96,803
Inventory, net	3,389	1,964
Income tax receivable	8,137	4,431
Prepaid expenses and other current assets	15,976	15,491
Total current assets	155,631	154,034
Property and equipment, net	33,524	30,153
Operating lease right of use assets	29,892
Goodwill	210,714	210,532
Other intangible assets, net	68,469	69,836
Deferred tax assets	1,978	1,373
Other long-term assets	18,658	17,288
TOTAL ASSETS	518,866	483,216
CURRENT LIABILITIES:
Current portion of long-term debt	453	331
Accounts payable	6,569	8,357
Accrued compensation and benefits	28,643	31,740
Current portion of operating lease liabilities	9,464
Other accrued expenses and current liabilities	31,910	27,565
Deferred revenue	66,030	59,765
Total current liabilities	143,069	127,758
Long-term debt, net of current portion	15,686	31,417
Operating lease liabilities, net of current portion	21,744
Deferred revenue, non-current	6,511	6,754
Other long-term liabilities	27,811	28,153
TOTAL LIABILITIES	214,821	194,082
Commitments and contingencies
MEZZANINE EQUITY	2,352	2,352
STOCKHOLDERS’ EQUITY:
Preferred stock ($0.0001 par value), authorized 45,000 shares, none issued and outstanding
Additional paid-in capital	381,159	379,832
Accumulated deficit	(68,986)	(82,005)
Accumulated other comprehensive loss	(10,487)	(11,052)
TOTAL STOCKHOLDERS’ EQUITY	301,693	286,782
TOTAL LIABILITIES, MEZZANINE EQUITY AND STOCKHOLDERS’ EQUITY	518,866	483,216
Class A Common Stock [Member]
STOCKHOLDERS’ EQUITY:
Common stock	4	4
Class B Common Stock [Member]
STOCKHOLDERS’ EQUITY:
Common stock	$ 3	$ 3