Stockholders' Equity - Common and Treasury Stock and Series B Convertible Preferred Stock (Details) shares in Thousands	6 Months Ended
	Jun. 30, 2020 shares
Common Shares Issued
Balance as of January 1, 2020 (in shares)	23,117
Balance as of June 30, 2020 (in shares)	23,117
Treasury Stock Shares
Balance as of January 1, 2020 (in shares)	260
Net shares issued for Stock awards (in shares)	(3)
Balance as of June 30, 2020 (in shares)	257
Common Shares Outstanding
Balance as of January 1, 2020 (in shares)	22,857
Balance as of June 30, 2020 (in shares)	22,860
Common Stock
Common Shares Outstanding
Net shares issued for Stock awards (in shares)	3