Subsequent Event	6 Months Ended
Jun. 30, 2021
Subsequent Events [Abstract]
Subsequent Event	8. SUBSEQUENT EVENT Acquisition of MediaDonuts On July 1, 2021, a wholly-owned subsidiary of the Company completed its acquisition of 100% of the issued and outstanding shares of stock of MediaDonuts Pte. Ltd., a company engaged in the sale and marketing of digital advertising in Southeast Asia. The transaction, funded from the Company’s cash on hand, includes a purchase price of approximately $15.1 million in cash, which amount was adjusted at closing to approximately $17.1 million due to customary purchase price adjustments for cash, indebtedness and working capital. Additionally, the transaction includes up to $7.4 million in contingent earn-out payments based upon the achievement of certain EBITDA targets in calendar years 2021 and 2022, and an additional earn-out based upon the achievement of certain year-over-year EBITDA growth targets in calendar years 2023 and 2024, calculated as a pre-determined multiple of EBITDA for each of those years.

The entire disclosure for significant events or transactions that occurred after the balance sheet date through the date the financial statements were issued or the date the financial statements were available to be issued. Examples include: the sale of a capital stock issue, purchase of a business, settlement of litigation, catastrophic loss, significant foreign exchange rate changes, loans to insiders or affiliates, and transactions not in the ordinary course of business.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 855
-URI http://asc.fasb.org/topic&trid=2122774

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 855
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=6842918&loc=SL6314017-165662

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