Stockholders' Equity - Common and Treasury Stock and Series B Convertible Preferred Stock (Details) shares in Thousands	9 Months Ended
	Sep. 30, 2020 shares
Common Shares Issued
Balance at beginning of period (in shares)	23,117
Balance at end of period (in shares)	23,117
Treasury Stock Shares
Balance at beginning of period (in shares)	260
Net shares issued for Stock awards (in shares)	(29)
Balance at end of period (in shares)	231
Common Shares Outstanding
Balance at beginning of period (in shares)	22,857
Balance at end of period (in shares)	22,886
Common Stock
Common Shares Outstanding
Net shares issued for Stock awards (in shares)	29