Subsequent Events	6 Months Ended
	Jun. 30, 2020
Subsequent Events [Abstract]
Subsequent Events	Subsequent EventsIn July 2020, the Company entered into a definitive agreement (the “Purchase Agreement”) to sell its 100% interest (the “Transaction”) in ALG to J.D. Power, a Delaware corporation (“J.D. Power”). The Purchase Agreement provides for J.D. Power to pay the Company (i) $112.5 million in cash consideration at the closing of the Transaction, subject to certain customary post-closing adjustments, (ii) a potential cash earnout of up to $7.5 million based upon ALG’s achievement of certain revenue metrics in 2020 and (iii) a potential cash earnout of up to $15 million based upon ALG’s achievement of certain revenue metrics in 2022. The closing of the Transaction is subject to customary closing conditions as well as regulatory review and approval. The Company is currently evaluating the tax effects of the Transaction on the Company’s condensed consolidated financial statements.In July 2020, the Company’s board of directors authorized an open market stock repurchase program (the “Program”) of up to $75 million to allow for the repurchase of shares of the Company’s common stock through September 30, 2022. The timing and amount of any repurchases will be determined by Company management based on its evaluation of market conditions and other factors. Repurchases of the Company’s common stock may be made under a Rule 10b5-1 plan, which would permit common stock to be repurchased when the Company might otherwise be precluded from doing so under insider trading laws, open market purchases, privately-negotiated transactions, block purchases or otherwise in accordance with applicable federal securities laws. The Program may be suspended or discontinued at any time and does not obligate the Company to purchase any minimum number of shares. The Program will be funded using the Company’s available cash and proceeds from the ALG divestiture.