Stock-based Compensation (Tables)

3 Months Ended

Mar. 31, 2019

United States

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Schedule of shares granted

On March 29, 2019, the Company granted the following share-based awards to members of management employed in the United States. These awards will be settled in shares of the Company's common stock and are equity-classified. The grant date fair value of these awards will be recognized on a straight-line basis over the vesting period. The performance-based restricted stock units each have a performance period that ends on December 31, 2021 and the other awards vest ratably on the first, second and third anniversaries of the grant date.

	Number of shares
Performance-based restricted stock units	467,500
Time-based restricted stock	363,650
Options	324,450
Total	1,155,600

Outside the United States

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Schedule of shares granted

On March 29, 2019, the Company also granted the following share-based awards to members of management employed in countries outside of the United States. These awards will be settled in cash and are liability-classified. Therefore, the fair value of these liability-classified awards will be re-measured on each balance sheet date. The performance-based phantom shares each have a performance period that ends on December 31, 2021 and the other awards vest ratably on the first, second and third anniversaries of the grant date.

	Number of shares
Performance-based phantom shares	46,200
Service-based phantom shares	75,250
Stock appreciation rights	5,450
Total	126,900

Performance-based Restricted Stock Units and Phantom Shares

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Schedule of valuation assumptions

Based on these assumptions, the grant date fair value of the performance-based restricted stock units and phantom shares was estimated to be $2.97 per share.

Volatility	65.1	%
Risk-free interest rate	2.36	%
Dividend yield	—	%
Grant date stock price	$3.34
Performance period	2.8 years

Stock Options And Stock Appreciation Rights

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Schedule of valuation assumptions

Based on these assumptions, the grant-date fair value of the stock options and stock appreciation rights was estimated to be $1.72.

Volatility	52.33	%
Risk-free interest rate	2.27	%
Dividend yield	—	%
Grant date stock price	$3.34
Expected life	6 years