Divestitures & Assets Held for Sale (Notes)	12 Months Ended
Dec. 31, 2019
Discontinued Operations and Disposal Groups [Abstract]
Divestitures & Assets Held for Sale	Divestitures & Assets Held for Sale Sale of Tuition Program Management Business On October 1, 2019, we sold our tuition program management business pursuant to an Asset Purchase Agreement with Bright Horizons Children's Centers LLC (the "buyer"). The purchase price was $20.0 million which was paid on closing, other than $1.5 million which is being held in escrow to secure possible indemnification claims pursuant to the terms of an escrow agreement which expires October 1, 2020. An additional $0.1 million was paid to the buyer in January 2020 based on the final calculation of assumed liabilities as defined in the asset purchase agreement. We recognized a pre-tax gain of $12.1 million, net of $0.1 million of direct selling costs, on the sale of the business. The gain recorded represents the difference between the purchase price and the carrying value of the business, which primarily included goodwill of $7.7 million. The tuition program management business was part of the Workforce Excellence segment. Sale of Alternative Fuels Division Effective January 1, 2020, we sold our Alternative Fuels Division pursuant to an Asset Purchase Agreement with Cryogenic Industries, LLC. The purchase price is up to $6.0 million, subject to adjustment based on a final calculation of net working capital as defined in the asset purchase agreement. Of the total purchase consideration, we received an advance payment of $1.5 million on December 31, 2019 and the remaining upfront consideration of $3.5 million on January 2, 2020 based on the estimated net working capital. In addition, up to $0.5 million of the purchase price is subject to the achievement of certain milestones under an assigned contract through the period December 31, 2021. The purchase price adjustment for closing net working capital is expected to be finalized during the first quarter of 2020. The major classes of assets and liabilities sold in connection with our Alternative Fuels Division included accounts receivable, net of $0.9 million, other current assets of $0.9 million, estimated goodwill of approximately $2.7 million, deferred revenue of $1.3 million and other current liabilities of $0.2 million as of December 31, 2019. The Alternative Fuels Division was part of the Workforce Excellence segment.

Divestitures & Assets Held for Sale

Sale of Tuition Program Management Business

On October 1, 2019, we sold our tuition program management business pursuant to an Asset Purchase Agreement with Bright Horizons Children's Centers LLC (the "buyer"). The purchase price was $20.0 million which was paid on closing, other than $1.5 million which is being held in escrow to secure possible indemnification claims pursuant to the terms of an escrow agreement which expires October 1, 2020. An additional $0.1 million was paid to the buyer in January 2020 based on the final calculation of assumed liabilities as defined in the asset purchase agreement. We recognized a pre-tax gain of $12.1 million, net of $0.1 million of direct selling costs, on the sale of the business. The gain recorded represents the difference between the purchase price and the carrying value of the business, which primarily included goodwill of $7.7 million. The tuition program management business was part of the Workforce Excellence segment.

Sale of Alternative Fuels Division

Effective January 1, 2020, we sold our Alternative Fuels Division pursuant to an Asset Purchase Agreement with Cryogenic Industries, LLC. The purchase price is up to $6.0 million, subject to adjustment based on a final calculation of net working capital as defined in the asset purchase agreement. Of the total purchase consideration, we received an advance payment of $1.5 million on December 31, 2019 and the remaining upfront consideration of $3.5 million on January 2, 2020 based on the estimated net working capital. In addition, up to $0.5 million of the purchase price is subject to the achievement of certain milestones under an assigned contract through the period December 31, 2021. The purchase price adjustment for closing net working capital is expected to be finalized during the first quarter of 2020.

The major classes of assets and liabilities sold in connection with our Alternative Fuels Division included accounts receivable, net of $0.9 million, other current assets of $0.9 million, estimated goodwill of approximately $2.7 million, deferred revenue of $1.3 million and other current liabilities of $0.2 million as of December 31, 2019. The Alternative Fuels Division was part of the Workforce Excellence segment.