Equity Incentive Plans and Stock-Based Compensation (Details) - shares			12 Months Ended
		Apr. 30, 2020	Dec. 31, 2022		Dec. 31, 2021		Dec. 31, 2020
Potential additional performance stock units
Shares available for grant
Nonvested equity stock and stock units granted (in shares)			600,000		400,000		500,000
Stock compensation plan
Shares available for grant
Shares available, at the beginning of the year			10,492,178		12,412,320		6,826,863
Number of additional shares authorized	[1]						7,800,000
Stock options granted							(40,000)
Stock options forfeited					54,327		101,816
Nonvested equity stock and stock units granted (in shares)	[3]		(4,107,633)	[2]	(3,918,251)	[4]	(3,528,401)	[5]
Nonvested equity stock and stock units forfeited (in shares)	[3]		1,271,224		1,943,782		1,252,042
Shares available, at the end of the period			7,655,769		10,492,178		12,412,320
Conversion factor used to calculate the decrease in the number of shares available for grant resulting from the grant of restricted stock awards			1.5		1.5		1.5
Conversion factor used to calculate the increase in the number of shares available for grant resulting from the forfeiture of restricted stock awards			1.5		1.5		1.5
Stock compensation plan | 2015 Equity Incentive Plan
Shares available for grant
Number of additional shares authorized		7,800,000

[1] On April 30, 2020, the Company’s stockholders approved an additional 7,800,000 shares for issuance under the 2015 Plan.

[2] Amount includes approximately 0.6 million shares that have been reserved for potential future issuance related to certain performance unit awards granted in 2022 and discussed under the section titled “Nonvested Equity Stock and Stock Units” below.

[3] For purposes of determining the number of shares available for grant under the 2015 Plan against the maximum number of shares authorized, each restricted stock granted reduces the number of shares available for grant by 1.5 shares and each restricted stock forfeited increases shares available for grant by 1.5 shares.

[4] Amount includes approximately 0.4 million shares that have been reserved for potential future issuance related to certain performance unit awards granted in 2021 and discussed under the section titled “Nonvested Equity Stock and Stock Units” below

[5] Amount includes approximately 0.5 million shares that have been reserved for potential future issuance related to certain performance unit awards granted in 2020 and discussed under the section titled “Nonvested Equity Stock and Stock Units” below.