Significant Transactions	3 Months Ended
Mar. 31, 2018
Significan Transactions [Abstract]
Significant Transactions	6. SIGNIFICANT TRANSACTIONS KMCC-TV On January 16, 2018, the Company completed the acquisition of television station KMCC-TV, which serves the Las Vegas, Nevada area, for an aggregate $3.6 million. The transaction was treated as an asset acquisition with the majority of the purchase price recorded in “Intangible assets not subject to amortization” on the Company’s consolidated balance sheet. Change in Fair Value of Contingent Consideration On April 4, 2017, the Company completed the acquisition of 100% of the stock of Headway, a provider of mobile, programmatic, data and performance digital marketing solutions primarily in the United States, Mexico and other markets in Latin America. The acquisition of Headway includes a contingent consideration arrangement that requires additional consideration to be paid by the Company to Headway based upon the achievement of certain annual performance benchmarks over a three-year period. During the quarter ended March 31, 2018, the Company increased the fair value of Contingent Consideration from $15.9 million to $18.0 million, with the resulting charge of $2.1 million recorded in “Change in Fair Value of Contingent Consideration” in the Company’s consolidated statement of operations.

6. SIGNIFICANT TRANSACTIONS

KMCC-TV

On January 16, 2018, the Company completed the acquisition of television station KMCC-TV, which serves the Las Vegas, Nevada area, for an aggregate $3.6 million. The transaction was treated as an asset acquisition with the majority of the purchase price recorded in “Intangible assets not subject to amortization” on the Company’s consolidated balance sheet.

Change in Fair Value of Contingent Consideration

On April 4, 2017, the Company completed the acquisition of 100% of the stock of Headway, a provider of mobile, programmatic, data and performance digital marketing solutions primarily in the United States, Mexico and other markets in Latin America. The acquisition of Headway includes a contingent consideration arrangement that requires additional consideration to be paid by the Company to Headway based upon the achievement of certain annual performance benchmarks over a three-year period. During the quarter ended March 31, 2018, the Company increased the fair value of Contingent Consideration from $15.9 million to $18.0 million, with the resulting charge of $2.1 million recorded in “Change in Fair Value of Contingent Consideration” in the Company’s consolidated statement of operations.