Stockholders' Equity - Grants Issued to Officers and Directors (Details) - shares	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Officers | SARs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grants in the period (in shares)	64,157	40,990
Officers | RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grants in the period (in shares)	5,301	6,147
Officers | PSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grants in the period (in shares)	4,066	9,324
Directors | SARs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grants in the period (in shares)	0	0
Directors | RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grants in the period (in shares)	3,530	3,400
Directors | PSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grants in the period (in shares)	0	0